Exchange 2010 - How to count mailbox number and other information

I take note about this command that give immediately result about users number for each Exchange DB:

(get-mailboxdatabase) | foreach-object {write-host $_.name (get-mailbox -database $_.name).count}

Database size and last backup:

(get-mailboxdatabase -status) | foreach-object {write-host $_.lastfullbackup $_.databasesize}

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