#include<bits/stdc++.h>
using namespace std;
int main(){
	int m,n,s,b;
	cin>>m>>n>>s;
	b=s/n*m;
	cout<<b;
} 
/**************************************************************
	Problem: 1323
	User: zhangyilei
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2072 kb
****************************************************************/