#include <bits/stdc++.h>
using namespace std;
int main(){
	int m,n,s,h;
	cin>>m>>n>>s;
	h=s/n*m;
	cout<<h;
}


/**************************************************************
	Problem: 1323
	User: 15159808820
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2072 kb
****************************************************************/