带带我吧，救救孩子吧，菜菜不会了

#include <stdio.h>

int main()
{
float a,b,c,d;
scanf("%f%f%f%f", &a, &b, &c, &d);
float e = a / b;
float f = (a / c) * d;
printf("%.1f\n",e);
printf("%.1f",f);
}