Right now, I'm trying to summon a villager with a trade of 18 emeralds for a silk touch book. I've looked everywhere and still am not getting the point. I would also like to know what command I would have to do to trade and get a book with two enchants. I really have no idea what to do and if someone could just present me with those commands, it would be greatly appreciated. I'm in 1.13.2 if that matters.