Pls someone help me with this, and fast pls

Mr switzer needs to buy new 1-foot tiles to cover his bathroom floor. the floor is 12 feet long and 8 feet wide. each square foot of tile will cost $1.79. in dollars what will be the total cost of the tiles he needs to buy.

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.