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