public static void main ( String [ ] args ) {
  FastScanner in = new FastScanner ( ) ;
  PrintWriter out = new PrintWriter ( System . out ) ;
  int t = in . nextInt ( ) ;
  while ( t -- > 0 ) {
    long a = in . nextLong ( ) , k = in . nextLong ( ) ;
    int cnt = 1 ;
    int min = minDig ( a ) ;
    int max = maxDig ( a ) ;
    while ( min != 0 && cnt < k ) {
      a += min * max ;
      min = minDig ( a ) ;
      max = maxDig ( a ) ;
      cnt ++ ;
    }
    out . println ( a ) ;
  }
  out . flush ( ) ;
}

public static void main ( String [ ] args ) { FastScanner in = new FastScanner ( ) ; PrintWriter out = new PrintWriter ( System . out ) ; int t = in . nextInt ( ) ; while ( t -- > 0 ) { long a = in . nextLong ( ) , k = in . nextLong ( ) ; int cnt = 1 ; int min = minDig ( a ) ; int max = maxDig ( a ) ; while ( min != 0 && cnt < k ) { a += min * max ; min = minDig ( a ) ; max = maxDig ( a ) ; cnt ++ ; } out . println ( a ) ; } out . flush ( ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list)))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (while_statement condition: (parenthesized_expression (binary_expression left: (update_expression (identifier)) right: (decimal_integer_literal))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation name: (identifier) arguments: (argument_list (identifier))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation name: (identifier) arguments: (argument_list (identifier))))) (while_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (binary_expression left: (identifier) right: (identifier)))) body: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier)))) (expression_statement (assignment_expression left: (identifier) right: (method_invocation name: (identifier) arguments: (argument_list (identifier))))) (expression_statement (assignment_expression left: (identifier) right: (method_invocation name: (identifier) arguments: (argument_list (identifier))))) (expression_statement (update_expression (identifier))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))