Choose > Extract Here (or "Extract to..." to pick a specific folder).
The file extension indicates that this is the third part of a "split archive" created using 7-Zip . This happens when a single large file is broken into smaller pieces (volumes) for easier sharing or storage.
GUI support * myfile. 7z. * myfile. 7z. * and so on constituted one 7z file split into bite-sized chunks.
The program will automatically detect Part 002, 003, etc., and combine them into the original content. Troubleshooting