: Use WinRAR (official for .rar files) or 7-Zip (free and open-source).
Always ensure you are downloading files from trusted sources to avoid malware. If this file was downloaded from a third-party site, run a virus scan on the folder before launching the executable.
: Move Resident.Evil.6.part1.rar , Resident.Evil.6.part2.rar , etc., into one single folder.