Can you figure this problem out?

I figured this out in about 20 seconds.  No one else in my family could figure it out. I must watch too much "Jeopardy!", because I picked up on the major clue.   I saw this on AOL, and it said:



   "What is the number of the parking spot containing the car?   The answer is right in front of you."

I will put the answer at the bottom if you are dying to know....but if not, try to figure out why it is the right answer!!





















Parking Spot # is 87.