Finding X -Y

import java.util.*;
import java.math.*;

class battel
{   
    int findValue(int x){ 
        BigInteger f = new BigInteger;
        f = 1;
        for(int i=1;i<=x;i++){
            f=f*i;
        }
        int count = 0;
        int sum = 0;
  
         while(f>0){
            if(f%10 == 0) {
                count++;
            }
            else {
                sum += f%10;
            }
      
            f = f/10;
        }
        return (sum - count);
    }
    public static void main (args[]){
        int n, i;
        Scanner n=new Scanner(System.in);
        int total =n.nextInt();
        int[] lucky = new int[total];
        for(i=0; i<total; i++){
            lucky[i] = n.nextInt();
        }
        for(i=0; i<lucky.length; i++){
            findValue(lucky[i]);
        }
    }
}