#include<bits/stdc++.h>
using namespace std;
int main(){
   int m,n,s;
   cin>>m>>n>>s;
   cout<<s/n*m;
}//1674
/**************************************************************
	Problem: 1323
	User: linmiaoling
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/