Use WinRar to split the files into smaller bits and then put back together on your PC
When you make a new RAR file, it lets you specify the maximum size per archive, WinRAR then makes multiplefiles, with the extensions .RAR, .R01, .R02, .R03, etc. To decompress the content of your split RAR file, just open the .RAR file and compress the files like usual. WinRAR will jump from part to part during decompression on its own.
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