#include<bits/stdc++.h>
using namespace std;
int a,b,n;
int main(){
	cin>>a>>b>>n;
	for(int i=1;i<=n;i++){
		a=a%b*10;
		cout<<a/b;
	} 
} 
/**************************************************************
	Problem: 1271
	User: panyuchen
	Language: C++
	Result: Wrong Answer
****************************************************************/