String Manipulation

So I have a log file where I need to grab some information from the last line.

I run this command to grab the information from the last line of the file.

$Log = (Get-Content ".LogFile.log")[-1] PS C:$Log 715083793 451808326 2045 files, 337 folders 

Trim the white space

$Data = $Log.Trim() PS C:$Log 715083793 451808326 2045 files, 337 folders 

I need to grab this information, 2045 files, 337 folders. Using the following code I found online, I can get the necessary information.

PS C:$Data | ForEach-Object {[System.String]::Join(" ",$_.Split()[6..9]) } 2045 files, 337 folders 

However, I don’t fully understand the code. I found the following Technet article, but it didn’t explain the $_Split, etc. https://blogs.technet.microsoft.com/heyscriptingguy/2014/07/16/join-me-in-a-few-string-methods-using-powershell/

Any help explaining the concepts would be appreciated, Thanks!