URI Solution of 1017 - Fuel Spent

//URI 1017

//Author : Humaun Kabir




#include <stdio.h>

  

int main() {

  

   double a,b,c;

    scanf("%lf\n%lf", &a, &b);

    c=(a * b / 12);

    printf("%.3lf\n", c);

    return 0;

}