Extract archives within subfolders (WinRAR)

Having a lot of archived, all in their own sub-folder?

.
└── main-folder/
    ├── sub-folder1/
    │   └── archive.rar
    ├── sub-folder2/
    │   └── archive.rar
    ├── sub-folder3/
    │   └── archive.rar
    └── sub-folder4/
        └── archive.rar

You can extract all of them with this command from the main-folder:

dir -Recurse | % {$_.FullName} | Split-Path | Get-Unique | % {cd $_ ; & "C:\Program Files\WinRAR\Rar.exe" x *.rar}

I sadly can't currently say if this also works with splitted archives because it's been a while since I used this command and I no longer have a Windows PC nor subfolders with archives in them. But as far as I remember I used it for splitted archives.

Extract archives within subfolders (WinRAR)

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