#include <stdio.h>

int main(void)
{
    int a, b, c, d;
    double z;

    printf("Enter a: ");
    scanf("%d", &a);
    printf("Enter b: ");
    scanf("%d", &b);
    printf("Enter c: ");
    scanf("%d", &c);
    d = a * b * c;
    z = (d + 3) / 15;

    printf("d: %d\n", d);
    printf("z: %f\n", z);

    return 0;
}