The Installation Package (The Sims 3)

Recently downloaded a Repack of The Sims 3 Complete Edition + Store from the Mechanics and... like a great Repack, but how to install package files, I did not understand... the Mods Folder 2: one in the root folder of the game, and the other old-fashioned Documents/Electronic Arts/The Sims 3/Mods. Installed the package via the app S3PackageViewer. Tried and via Monkey, but it's a total disaster, not a program.

Tell me, please, because I can't catch what I'm doing wrong. Whether Repack left download, or package. otherwise you need to install the game...
I would be very grateful for any help and advice.