#include <iostream>
using std::cout;
using std::cin;
using std::endl;

int main()
{
	double a, b, div;

	cout << "Enter a: ";
	cin >> a;
	cout << "Enter b: ";
	cin >> b;

	div = a / b;

	cout << (div - (int)div) << endl;

	cin.get();
	return 0;
}