import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner stdIn = new Scanner(System.in);
        int A = stdIn.nextInt();
        int B = stdIn.nextInt();
        int T = stdIn.nextInt();
        int sum = 0;
        for (int time = A; time < T + 0.5; time += A) {
            sum += B;
        }
        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