When you divide numbers and just want the decimals before the decimal point, you could cast the result to integer. However, this would also round the result:
PS> 18 / 5 3.6 PS> [Int](18/5) 4
To strip off all decimals behind the decimal point, use Truncate() from the .NET Math library:
PS> [Math]::Truncate(18/5) 3
Likewise, to manually round, use Floor() or Ceiling().
