You are given an integer n and an integer k.

In one step you can do one of the following moves: 

  * decrease n by 1; 
  * divide n by k if n is divisible by k. 



For example, if n = 27 and k = 3 you can do the following steps: 27 → 26 → 25 → 24 → 8 → 7 → 6 → 2 → 1 → 0.

You are asked to calculate the minimum number of steps to reach 0 from n. 

Input

The first line contains one integer t (1 ≤ t ≤ 100) — the number of queries.

The only line of each query contains two integers n and k (1 ≤ n ≤ 10^{18}, 2 ≤ k ≤ 10^{18}).

Output

For each query print the minimum number of steps to reach 0 from n in single line. 

Example

Input


2
59 3
1000000000000000000 10


Output


8
19

Note

Steps for the first test case are: 59 → 58 → 57 → 19 → 18 → 6 → 2 → 1 → 0.

In the second test case you have to divide n by k 18 times and then decrease n by 1.
import java.io.*;
import java.math.BigInteger;
import java.util.*;


public class Main {
    private final static long mod = 1000000007;

    private final static int MAXN = 100001;

    private static long power(long x, long y, long m) {
        long temp;
        if (y == 0)
            return 1;
        temp = power(x, y / 2, m);
        temp = (temp * temp) % m;
        if (y % 2 == 0)
            return temp;
        else
            return ((x % m) * temp) % m;
    }

    private static long power(long x, long y) {
        return power(x, y, mod);
    }

    private static long gcd(long a, long b) {
        if (b == 0) return a;
        return gcd(b, a % b);
    }

    static int nextPowerOf2(int a) {
        return 1 << nextLog2(a);
    }

    static int nextLog2(int a) {
        return (a == 0 ? 0 : 32 - Integer.numberOfLeadingZeros(a - 1));
    }

    private static long modInverse(long a, long m) {
        long m0 = m;
        long y = 0, x = 1;
        if (m == 1)
            return 0;
        while (a > 1) {
            long q = a / m;
            long t = m;
            m = a % m;
            a = t;
            t = y;
            y = x - q * y;
            x = t;
        }
        if (x < 0)
            x += m0;
        return x;
    }


    private static class Pair<T, U> {
        T a;
        U b;

        public Pair(T a, U b) {
            this.a = a;
            this.b = b;
        }

        @Override
        public boolean equals(Object o) {
            if (this == o) return true;
            if (o == null || getClass() != o.getClass()) return false;
            Pair pair = (Pair) o;
            return a == pair.a &&
                    b == pair.b;
        }

        @Override
        public int hashCode() {
            return Objects.hash(a, b);
        }

        @Override
        public String toString() {
            return "(" + a +
                    "," + b +
                    ')';
        }
    }

    private static int log[]= new int[MAXN+1];

    private static int getLRMax(int st[][], int L, int R){
        int j = log[R - L + 1];
        return Math.max(st[L][j], st[R - (1 << j) + 1][j]);
    }

    private static int[][] getSparseTable(int array[]){
        int k= log[MAXN]+1;
        int st[][]=new int[MAXN][k+1];

        for (int i = 0; i < array.length; i++)
            st[i][0] = array[i];

        for (int j = 1; j <= k; j++) {
            for (int i = 0; i + (1 << j) <= array.length; i++) {
                st[i][j] = Math.max(st[i][j-1], st[i + (1 << (j - 1))][j - 1]);
            }
        }
        return st;
    }

    public static void main(String[] args) throws IOException {
        System.out.println("");
        try (FastReader in = new FastReader();
             FastWriter out = new FastWriter()) {
            int t, i, j, m, l, r, c, x, y, z, p, q, ti, tidx, d;
            for (t = in.nextInt(), tidx = 1; tidx <= t; tidx++)
            {
                //out.print(String.format("Case #%d: ", tidx));
                long n,k;
                n=in.nextLong();
                k=in.nextLong();
                long ans=0;
                while(n>0){
                    if(n%k==0){
                        n/=k;
                        ans++;
                    }
                    else{
                        ans+=(n%k);
                        n-=(n%k);
                    }
                }
                out.println(ans);
            }
        }
    }


    static class FastReader implements Closeable {
        private BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        private StringTokenizer st;
        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }

        int[] nextIntArr(int n) {
            int[] arr = new int[n];
            for (int i = 0; i < n; i++) {
                arr[i] = nextInt();
            }
            return arr;
        }

        double[] nextDoubleArr(int n) {
            double[] arr = new double[n];
            for (int i = 0; i < n; i++) {
                arr[i] = nextDouble();
            }
            return arr;
        }

        long[] nextLongArr(int n) {
            long[] arr = new long[n];
            for (int i = 0; i < n; i++) {
                arr[i] = nextLong();
            }
            return arr;
        }

        String[] nextStrArr(int n) {
            String[] arr = new String[n];
            for (int i = 0; i < n; i++) {
                arr[i] = next();
            }
            return arr;
        }

        int[][] nextIntArr2(int n, int m) {
            int[][] arr = new int[n][m];
            for (int i = 0; i < n; i++) {
                arr[i] = nextIntArr(m);
            }
            return arr;
        }

        long[][] nextLongArr2(int n, int m) {
            long[][] arr = new long[n][m];
            for (int i = 0; i < n; i++) {
                arr[i] = nextLongArr(m);
            }
            return arr;
        }

        @Override
        public void close() throws IOException {
            br.close();
        }
    }

    static class FastWriter implements Closeable {
        BufferedWriter bw;
        List<String> list = new ArrayList<>();
        Set<String> set = new HashSet<>();

        FastWriter() {
            bw = new BufferedWriter(new OutputStreamWriter(System.out));
        }

        <T> void print(T obj) throws IOException {
            bw.write(obj.toString());
            bw.flush();
        }

        void println() throws IOException {
            print("\n");
        }

        <T> void println(T obj) throws IOException {
            print(obj.toString() + "\n");
        }

        <T> void printArrLn(T[] arr) throws IOException {
            for (int i = 0; i < arr.length - 1; i++) {
                print(arr[i] + " ");
            }
            println(arr[arr.length - 1]);
        }

        <T> void printArr2(T[][] arr) throws IOException {
            for (int j = 0; j < arr.length; j++) {
                for (int i = 0; i < arr[j].length - 1; i++) {
                    print(arr[j][i] + " ");
                }
                println(arr[j][arr.length - 1]);
            }
        }

        <T> void printColl(Collection<T> coll) throws IOException {
            for (T e : coll) {
                print(e + " ");
            }
            println();
        }

        void printCharN(char c, int n) throws IOException {
            for (int i = 0; i < n; i++) {
                print(c);
            }
        }

        void printIntArr2(int[][] arr) throws IOException {
            for (int j = 0; j < arr.length; j++) {
                for (int i = 0; i < arr[j].length - 1; i++) {
                    print(arr[j][i] + " ");
                }
                println(arr[j][arr.length - 1]);
            }
        }

        @Override
        public void close() throws IOException {
            bw.close();
        }
    }


}
