(e.g., Missing parts or corruption errors?)
WinRAR or 7-Zip are standard, with free options available for various operating systems. 12.0 - XYZ.part07.rar
You do not need to extract every file individually. You only need to run the extraction process on the first file ( .part01.rar or just .rar if the first is not numbered), and software like WinRAR, 7-Zip, or The Unarchiver will automatically pull the data from all parts [1]. and software like WinRAR