public static void main ( String [ ] args ) {
  FastScanner fs = new FastScanner ( ) ;
  final double PI = 3.141593 ;
  int num = fs . nextInt ( ) ;
  int m = fs . nextInt ( ) ;
  double ans = 999999999.99 ;
  for ( int i = 0 ;
  i < num ;
  i ++ ) {
    int a = fs . nextInt ( ) ;
    int b = fs . nextInt ( ) ;
    ans = Math . min ( ans , ( double ) ( a * m ) / b ) ;
  }
  System . out . println ( ans ) ;
}

public static void main ( String [ ] args ) { FastScanner fs = new FastScanner ( ) ; final double PI = 3.141593 ; int num = fs . nextInt ( ) ; int m = fs . nextInt ( ) ; double ans = 999999999.99 ; for ( int i = 0 ; i < num ; i ++ ) { int a = fs . nextInt ( ) ; int b = fs . nextInt ( ) ; ans = Math . min ( ans , ( double ) ( a * m ) / b ) ; } System . out . println ( ans ) ; }
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