#include<bits/stdc++.h>
using namespace std;
int a,b,n,s;
int main(){
	cin>>a>>n>>s;
	b=s/n;
	cout<<a*b;
	return 0;
}

/**************************************************************
	Problem: 1323
	User: zhangziang
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/