#11811: 輔弟專業解答


s510446 (11137)


#include <bits/stdc++.h>
 using namespace std;
  
 int main() {
 double V, R;
 while (scanf("%lf %lf", &V, &R) == 2)
 printf("%.4lf\n", V * 1000 / R);
 return 0;
 }