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



    return 0;
}

/**************************************************************
	Problem: 1323
	User: caiqiaoxi
	Language: C++
	Result: Accepted
	Time:13 ms
	Memory:2072 kb
****************************************************************/