Are you having trouble of this specific file, or did you run into a specific error code ?
Download and install the free utility from the official 7-Zip Website.
Hover over 7-Zip in the menu and select or Extract to "Prokofiev_Suites/" .
Navigate to the folder containing all your downloaded parts.
You must have every single part (e.g., part1.rar , part2.rar , part3.rar ) downloaded and sitting in the exact same folder on your computer.