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]: Tom bought 14 boxes of chocolate candy and gave 8 to his little brother . If each box has 3 pieces inside it , how many pieces did Tom still have ?
[EX A]: 18

[EX Q]: Joan spent $ 15 on shorts and $ 14.82 on a jacket , and $ 12.51 on a shirt . She went to 3 shops . In total , how much money did Joan spend on clothing ?
[EX A]: 42.33

[EX Q]: 1 cell phone plan costs 49.95 dollars per month . The first 2500 minutes of use are free . Each minute thereafter costs 0.25 dollars . For a bill of 112.45 dollars , how many minutes over 2500 was the cell phone in use ?
[EX A]:
250