You are given a math word problem and you are supposed to apply multiple mathematical operators like addition, subtraction, multiplication, or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

[EX Q]: a shoe store was having a back to school sale where you could buy 2 pairs of shoes for $ 23.10 . if a large family decided to buy 7 pairs of shoes how much would it cost them ?
[EX A]: 80.85

[EX Q]: mr. lee gave out first place ribbons after each event . he had 38 ribbons at the start . he gave away 14 ribbons in the morning . he gave out 16 ribbons in the afternoon . how many ribbons did mr. lee have left ?
[EX A]: 8

[EX Q]: jovana filled her bucket with 5 pounds of shells . if a friend comes to add 15 pounds of shells and another friend comes to add 17 pounds of shells how many pounds does she have altogether ?
[EX A]:
37