The races had 3,832 people in attendance on Thursday, 4,295 people on Friday, and 4,783 people on Saturday. If the racetrack seats 5,000 people, how many empty seats were there in all for the three races?

Sean is his dad build a tiled walkway in their backyard. the walkway will be 6060 feet long and 22 feet wide. the local hardware store sells tiles which are 22 by 22 feet and come in boxes of 66. how many boxes of tiles do they need?