Why some cases still doesn't work?

Question

//Code
import java.util.Scanner;

public class Program
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int amount = scanner.nextInt();

float rest;
rest = (float)amount;

for(int r= 0; r<6; r++){
rest -= rest/10 ;
}
System.out.println((int)rest);
}
}

Answer 1

Saad Take amount as double and do

for (int i = 0; i < 6; i++)
amount = amount - Math.ceil(amount / 10);

System.out.println((int) amount);

Answer 2

Done it