import java.util.Scanner;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String[] list = sc.nextLine().split(" ",0);
		int A = Integer.parseInt(list[0]);
		int B = Integer.parseInt(list[1]);
		int T = Integer.parseInt(list[2]);

		System.out.println(B*(T/A));
		sc.close();
	}

}
/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