: Select "Extract here" or "Extract to..." from the menu. The software will pull the data from all the parts and combine them into a single folder or file for you.
The file is the third piece of a multi-part compressed archive. 85H8E84L5FN57484HD85R.part3.rar
Because it is a "split" archive, you cannot open this file on its own. To extract the content, you need to have (part1, part2, part3, etc.) in the same folder. How to handle this file: : Select "Extract here" or "Extract to