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