How to forcefully delete all the disconnected mailboxes at one go \ batch by batch.

Hi

I have 100 of users who have left our organisation in the past and their mailboxes has not been deleted.
Now I have deleted their mailboxes and lists all the deleted mailbox with their Display names and MailboxGuid , when I give the following command.

Get-MailboxStatistics | where-object { $_.DisconnectDate -ne $null } | Select DisplayName,MailboxGuid

I know how to forcefully delete the mailbox by entering the following command and putting the relevant MailboxGuid one by one. It  will take lot of time if I go on this method.

[PS] C:\Windows\system32>Remove-Mailbox -Database "Mailbox Database" -StoreMailboxIdentity "a31fb8b5-14ee-4509-834e-409d2ea3fe38" -confirm:$true

Confirm
Are you sure you want to perform this action?
Removing store mailbox "a31fb8b5-14ee-4509-834e-409d2ea3fe38" on database
"Exchange.domain.local\Mailbox Database".
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help
(default is "Y"):y
[PS] C:\Windows\system32>

Is there a easy way of forcefully deleting the  disconnected mailboxes at one go.

Any help will be great.

Thanks