new C Code 2

#include <stdio.h>

int main()
{
    double R,B,runrate, x=1, T;
    scanf("%lf", &T);
    while(T>0){
        scanf("%lf %lf", &R, &B);
        runrate=(R/B)*6;
        printf("Case %0.0lf: %0.2lf", x++, runrate);
        T--;
    }
    if(B==0){
        printf("1");
    }
    return 0;
}