First time buying a car, need help figuring out how much ill be paying...?

I am looking into buying a new car and it will be my first time getting a loan for anything. The place I'm looking at buying from doesn't do credit checks so they charge 20% interest. (I have no credit and no co signer so I kind of have to go through them.) I will be putting 1200 down and the car is $5000. How much would I be paying a month if I do a 2 year loan? And how much would I be paying in the end with the 20% interest? Thanks for your help! (: