(Editing the question.) I'm sorry!! I didn't read it well.
36 may be the answer.
I may be wrong.
3 6/10 or simplified 3 3/5
Answer:
67
Step-by-step explanation:
Division:-

So first you would evaluate the power making the 4^3=64 then keep the rest of the problem the same.... then add the numbers 64+8 since their the whole numbers and that would equal 72 so now the problem should be 72-9/y. After that you write all the numerators above the common denominator making the final answer to be 72y-9/y