
import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      String[] nyu=sc.nextLine().split(" ");
   //  String nyu=sc.nextLine();

int A=Integer.parseInt(nyu[0]);
int B=Integer.parseInt(nyu[1]);
int T=Integer.parseInt(nyu[2]);


int count=0;
int num=0;
int ryo=0;
while(true){
if(count>T)break;

if(count%A==0 && count!=0)ryo+=B;
//System.out.println(ryo+"--"+count);
count++;
}

System.out.println(ryo);



	}
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz