PowerTip: Round Number Up or Down with PowerShell

Summary: Easily use Windows PowerShell to round a number up or down.  

 I want only a whole number returned, so I want the number rounded up or down as appropriate.
           How can I do this with Windows PowerShell?

 Cast the number as an integer, and Windows PowerShell will round the number up or down
           as appropriate, for example:

PS C:\> [int]22.4

22

PS C:\> [int]22.5

22

PS C:\> [int]22.6

23