#include<bits/stdc++.h>
using namespace std;
int main(){
	int m,n,s,a;
	scanf("%d %d %d",&m,&n,&s); 
	a=s/n*m;
	cout<<a;
	
} 

/**************************************************************
	Problem: 1323
	User: zhengzihao3
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/