It's a colloquialism. At the moment the only English one I can think of that comes close is : The more the merrier.
Could you possibly expand on this, maybe in like a couple of set-up sentences for context? It would be awesome if you could :)
It would make sense within a context - eg someone says 'I can't lift those three boxes' and you reply 'three are easy'.
Makes sense, as in I know what you mean, but still sounds wrong, but not every German phrase can translate into a proper English phrase.
Rather something like: Three are easy to master or Three aren't very heavy or Three are no problem [which might include obtaining]. It lacks much, much context to say something more precise.
maybe... "Most of the packages you sent are full, but 3 are light. Don't make me set Chris and Snoop on you! You don't wanna steal from Marlo bro. You feel me?"
I think a good comparative sentence in English is "Many hands make the work light."