Search-Mailbox: Easy way to convert String values to Integers

Scenario: Need an easy way to convert the [string] value into a number? Specifically for the Search-Mailbox command for the ResultItemsCount and ResultItemsSize?

Solution:

Command:
$Search = Search-Mailbox $mbx -SearchDumpster -SearchQuery Received:1/1/1900..1/1/2013 -EstimateResultOnly

Now convert the results and store in a variable:
Note: $ItemSize is in Bytes.

$ItemCount = ($Search.ResultItemsCount) -as [int]

$ItemSize = (([regex]::match($Search.ResultItemsSize, $regex).Groups[1].value) -replace " bytes","" -as [int])