Sims4 island living size?

MY EP07 Folder is 1.37GB in size. I assume this is the Island Living expansion.

To answer your question a little more directly, I found this on the Internet:

1024 bytes = 1 KB
1024 KB = 1 MB
1024 MB = 1 GB
1024 GB = 1 TB
1024 TB = 1 PB

Thanks