source: Option Explicit
  Dim a, b
  a = 10
  b = 5
  MsgBox "Test #12 - Math: " & (a - b)
target: Add-Type -AssemblyName Microsoft.VisualBasic
  Option Explicit
  
  $a = 10
  $b = 5
  [Microsoft.VisualBasic.Interaction]::MsgBox "Test #12 - Math: " + ($a - $b)