#include<bits/stdc++.h>
using namespace std;
int m,n,s,a;
int main(){
    cin>>m>>n>>s; 
    a=s/n*m;
    cout<<a;
     
} 
/**************************************************************
	Problem: 1323
	User: chenyichuen
	Language: C++
	Result: Accepted
	Time:17 ms
	Memory:2072 kb
****************************************************************/