You do not need to highlight or open every file. Open or right-click only the first part ( LFMRTR-18-MW.part1.rar ).
Your extraction program will automatically pull the split data from the rest of the parts and assemble your final complete file or folder. 🛠️ Recommended Software LFMRTR-18-MW.part1.rar
Use an unzipping program like WinRAR or 7-Zip. Click "Extract Here" or "Extract to [Folder Name]" . You do not need to highlight or open every file