This is my last question help

With #! i’ve tried to figure it out but i can’t.

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.

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase