Ineed with number 42. i am very confused on what to do

Aparking lot is to be 400 feet wide and 370 feet deep. how many standard-sized cars fit in this lot considering a double-loaded (w4) two way traffic set up, an angle of 90° and a sw of 9’ 0’’? (do not consider handicapped parking spaces, and consider 15’ for turning aisles). show your work.

Which is the completely factored from of xy^3-x^3y

With alll of except for the 2 that i did already