Help Grinch to break the password $($Version II$)$: Assuming that the Grinch has now discovered

the function responsible for generating the final authenticating string within the app implementation,

here is the code fragment. This function accepts the user$$s password and a random number as input,

producing the final authenticating string. Grinch has utilized a sniffer and acquired the random number,

which is "drexel", and the resulting authenticating string is $"$d$88$abf$8$d$6473$db$08$c$9203$f

$8$e$4$d$7981$db$9$ad$7$a$66$e$5$afab$0$e$1$fc$9$df$01$a$437$f$32$d$7."$ Now, Grinch seeks assistance in

determining the user$$s actual password. $($The password consists of fewer than $8$ digits and comprises

solely numbers.$)$

This is the code I am working with:

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

public class HashCalculator $\{$

public static String calculateCombinedHash$($String random, String password$)\{$

$//$ Combine the two strings

String combinedString $=$ random $+$ password;

try $\{$

$//$ Create a MessageDigest instance for SHA$-256$

MessageDigest digest $=$ MessageDigest.getInstance$("$SHA$-256")$;

$//$ Get bytes of the combined string

byte$[]$ combinedBytes $=$ combinedString.getBytes$()$;

$//$ Calculate hash bytes

byte$[]$ hashBytes $=$ digest.digest$($combinedBytes$)$;

$//$ Convert hash bytes to hexadecimal representation

StringBuilder hexString $=$ new StringBuilder$()$;

for $($byte hashByte : hashBytes$)\{$

$//$ Convert each byte to hexadecimal format

String hex $=$ Integer.toHexString$(0$xff & hashByte$)$;

if $($hex$.$length$()==1)\{$

hexString.append$(\text{'}0\text{'})$;

$\}$

hexString.append$($hex$)$;

$\}$

$//$ Return the hexadecimal representation of the hash

return hexString.toString$()$;

$\}$ catch $($NoSuchAlgorithmException e$)\{$

e$.$printStackTrace$()$;

return null; $//$ Return null if hashing algorithm is not found

$\}$

$\}$

public static void main$($String$[]$ args$)\{$

String random $=$ "drexel";

String hash $="$d$88$abf$8$d$6473$db$08$c$9203$f$8$e$4$d$7981$db$9$ad$7$a$66$e$5$afab$0$e$1$fc$9$df$01$a$437$f$32$d$7"$;

for $($int i $=0$; i $<100000000$; i$++)\{$

String password $=$ String.format$("\%07$d$",$ i$)$; $//$ Password is less than $8$ digits

String combinedHash $=$ calculateCombinedHash$($random$,$ password$)$;

if $($combinedHash$.$equals$($hash$))\{$

System.out.println$("$Found the password: $"+$ password$)$;

break;

$\}$

if $($i $\%1000000==0)\{$

System.out.println$("$Checked $"+$ i $+"$ passwords so far..."$)$;

$\}$

$\}$

$\}$

$\}$

It is not showing anything of the password, but is showing the count of passwords attempted.