import java.util.Scanner;

public class Main{
  public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    int a=scanner.nextInt();
    int b=scanner.nextInt();
    int t=scanner.nextInt();

    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