Please help. For each box, just number them. Example: The top box is 1, the middle box is 2, and the third box is 3.

Answer:
box 1=4
20/5= 4 (if you divide the others by x and y they equal 4)
box 2=512
if every square mile has 4 squirrels. then you multiply 128×4=512
box 3=81 because you divide 324/4=81