import java.util.Scanner;

public class Main {


public static void main(String[] args) {

			Scanner sc = new Scanner(System.in);

			int A = sc.nextInt();
			int B = sc.nextInt();
			int T = sc.nextInt();

			int count = 0;

			if( A > T ) {
				count = 0;
				System.out.println(count);
			}
			if( A == T ) {
				count = B;
				System.out.println(count);
			}
			if( A < T ){
				count = B * (T / A);
				System.out.println(count);
			}
		}

	}
/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