#include<bits/stdc++.h>
using namespace std;
int main(){
	int m,n,s,k,h;
	cin>>m>>n>>s;
	k=s/n;
	h=k*m;
	printf("%d",h);
	return 0;
}
/**************************************************************
	Problem: 1323
	User: toughuatao1
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/