The numbers "1245 - 1391" likely refer to a specific range (such as page numbers, episodes, or years), but without more context, it is impossible to know exactly what the "piece" inside contains.
Do you have of the archive downloaded in the same location? 1245 - 1391.part1.rar
: Use a tool like WinRAR , 7-Zip , or The Unarchiver (for Mac). The numbers "1245 - 1391" likely refer to
: Right-click on part1.rar and select "Extract Here" or "Extract to [Folder Name]." The software will automatically detect and combine all subsequent parts to recreate the original file. but without more context