I can provide the specific commands or tool links based on your answer.
Ensure ls202130.part1.rar , ls202130.part2.rar (and any further parts, e.g., .part3.rar ) are stored together in the same directory. ls202130.part2.rar
Use archival software like WinRAR or 7-Zip to right-click only ls202130.part1.rar and select "Extract Here" or "Extract to [Folder Name]". I can provide the specific commands or tool