/* Last edited on 2011-07-10 20:37:32 by stolfi */

#include<stdio.h>
#include<stdlib.h>
main(int a,char**z){unsigned int m=atoi(z[1]),n=atoi(z[2]),p=atoi(z[3]),q,i=0;for(;i<p;i++){q=m/n;m=m%n*10;printf("%d%s",q,(i?"":"."));}}