I have set up this achievement on an achievement world I am building. Most of the achievements are obtainable but it's still a work in progress which is why I have cornered off this achievement as it definitely works.
Simply use this link https://bit.ly/2Vm9y97
to access a dropbox folder where the world is. The world's name is "Update 1.11.1 Achievements". For Windows 10, download the .mcworld file and simply import it into Minecraft.
When the world is downloaded and is successfully added to your worlds, make 5-6 copies of it before you open it (if you don't, you will need to download and add the world again). Now for the achievement. I have it setup so only butchers are spawned in as they seem to be the most efficient villager to use for this achievement. The spawn location is the exact same for the host as well as anyone who will join and is right in front of the achievement area so you don't have to run 500 blocks to get there. Your inventory is already filled with the required meat so all you have to do is go to each villager and trade with them to receive emeralds. Theoretically it should only take 5 saves as you should get 200 emeralds per run, but I recommend downloading that 6th save just in case you need it.