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.

[Q]: Henry earned 5 dollars for each lawn he mowed . If he had 12 lawns to mow , but forgot to mow 7 of them , how much money did he actually earn ?
[A]: 25

[Q]: A company invited 47 people to a luncheon , but 7 of them did n't show up . If the tables they had held 5 people each , how many tables do they need ?
[A]: 8

[Q]: There are 39 dogwood trees currently in the park . Park workers will plant 41 dogwood trees today and 20 dogwood trees tomorrow . How many dogwood trees will the park have when the workers are finished ?
[A]:
100