Show file download time & rate

## Assuming file not modified since download, calculates time difference between file creation and modification time
[int]$global:tt = 0; Get-ItemProperty "c:\downloads\summit.iso"|select @{n='Download duration (s)';e={$global:tt = (New-TimeSpan -start $_.CreationTime -End $_.LastWriteTime).TotalSeconds -as [int];$global:tt}},@{n='MB';e={[math]::Round( $_.Length/1MB, 1)}},@{n='MB/s';e={[math]::Round( ($_.Length/1MB)/$global:tt , 1)}},CreationTime,FullName