#include<bits/stdc++.h>
using namespace std;
int main(){
	int m, n, s;
    cin >> m >> n >> s;
    int a = (s / n) * m;
    cout << a << endl;
    return 0;
	return 0;
} 
/**************************************************************
	Problem: 1323
	User: fuhoubin
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/