[Question]: Luigi bought four pizzas for $80. Each pizza was cut into 5 pieces. How much did each piece of pizza cost, in dollars?
[Answer]: 4 pizzas at $80 per pizza is $80 / 4 = $20 per pizza. If there were 5 pieces per pizza, then each piece was worth $20 / 5 = $4.
So the answer is 4.

[Question]: An apple tree produced 200 apples in a particular season. The tree made 20% fewer fruits the following season, but the tree fruits production in the second season doubled during the third season. Calculate the total number of fruits the apple tree grew in the three seasons.
[Answer]: If the tree produced 200 apples in the first season, there were 20 / 100 * 200 = 40 fewer fruits in the second season. The total production from the apple tree in the second season is 200 - 40 = 160. In the two seasons, the apple tree produced 160 + 200 = 360 fruits. The apple tree doubled the number of fruits it produced in the third season, totaling 160 * 2 = 320. In the three seasons, the apple tree produced 320 + 360 = 680 apples.
So the answer is 680.

[Question]: At Clark's Food Store, apples cost 40 dollars for a dozen, and pears cost 50 dollars for a dozen. If Hank bought 14 dozen of each kind of fruit, how many dollars did he spend?
[Answer]:
If Hank bought 14 dozen apples, he spent 14 * $40 = $560. Hank also spent $50 * 14 = $700 for 14 dozen pears. The total cost of the fruits that hank bought is $700 + $560 = $1260.
So the answer is 1260.