import java.util.*;
public class Main{
	public static void main(String[] args){
      	Scanner sc = new Scanner(System.in);
    	int a = sc.nextInt();
      	int b = sc.nextInt();
      	double t = sc.nextDouble();
      	int sec = (int)((t+0.5)/a);
      	int sum = b*sec;
      	System.out.println(sum);
    }
}
/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