WinRAR (the official tool) or 7-Zip (free/open-source). Mac/Mobile: Apps like The Unarchiver or PeaZip work well.
Use a tool like VirusTotal to check the file for malware. ШЄШЩ…ЩЉЩ„ date400 rar
Knowing the (e.g., "It's for my office accounting software") will help me find the specific resource you need. WinRAR (the official tool) or 7-Zip (free/open-source)
To help you find the right "paper" or file, could you clarify: could you clarify: