#include<bits/stdc++.h>
using namespace std;
int main(){
    int m,n,s,b;
    cin>>m>>n>>s;
    b=s/n*m;
    cout<<b;
} 
/**************************************************************
	Problem: 1323
	User: xuezihong1
	Language: C++
	Result: Accepted
	Time:16 ms
	Memory:2072 kb
****************************************************************/