#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: 21A
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/