I don’t know if I’m completely right because I haven’t done this in a awhile but i think it may be y=62.5. So if you look at the set of letters it gives you it has a specific order. And you have go by that order. Y is between B & A, so you would choose the number between E&D, and you would do as I did in the picture. I didn’t explain this very well but I hope it helps
