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();
		int T = sc.nextInt();
		int ans = 0;
		for (int i = 1; i < T + 0.5; i++) {
			if (i % A == 0) {
				ans += B;
			}
		}
		
		System.out.println(ans);
		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