#include <stdio.h>
#include <stdbool.h>

int main()
{
	int T;
	int A, B, C;
	int D;
	int ama[10];

	for( int i = 0; i < 10; i++ ) {
		ama[i] = false; 
	}
	scanf( "%d\n", &T );
	for( int i = 0; i< T; i++ ) {
		scanf( "%d %d %d\n", &A, &B, &C );

		A = A % B;
		A = A * 10;
		int a;
		for( int j = 0; j < C; j++ ) {
			a = A % B;
			D =  A /B;
			A =  ( A  % B ) * 10;

		}
		printf("%d\n", D );
	}
	return 0;
}