import java.util.Scanner;

public class Main{
  public static void main(String[]args){
    Scanner sc=new Scanner(System.in);
    while(sc.hasNext()){
      int a=sc.nextInt(); //秒
      int b=sc.nextInt(); //枚数
      int t=sc.nextInt();
      int total;
      total=(int)(t+0.5)/a;
      System.out.println(total*b);
    }
  }
}
/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