#include <bits/stdc++.h>
using namespace std;
int main(){
    int m,n,s,a;
	cin>>m>>n>>s;
	a=(s/n)*m;
	cout<<a;	
}
/**************************************************************
	Problem: 1323
	User: tonghuawei
	Language: C++
	Result: Accepted
	Time:19 ms
	Memory:2072 kb
****************************************************************/