import java.util.*;

public class Main{
    public static void main(String[] args) {
      Scanner sc = new Scanner(System.in);

      int a = Integer.parseInt(sc.next());
      int b = Integer.parseInt(sc.next());
      int t = Integer.parseInt(sc.next());

      int ans = 0;

      for(int i=a;i<=t+0.5;i+=a){
        ans += b;
      }

      System.out.println(ans);

    }
}

/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