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