#include<iostream>
#include<cstdio>
using namespace std;
 
int main()
{
	int a,b,c; 
	while(scanf("%d/%d %d",&a,&b,&c) != EOF)
	{
		printf("%d.",a/b);
		a%=b;
		while(c--)
		{
			a*=10;
			int q=a/b;
			printf("%d",q);
			a%=b;
			if(a==0)
			{
				break;
			}
		}
		printf("\n");	
	} 
	return 0;
}