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

[EX Q]: While playing a trivia game , Adam answered 5 questions correct in the first half and 5 questions correct in the second half . If each question was worth 5 points , what was his final score ?
[EX A]: 50

[EX Q]: There are 34 dogwood trees currently in the park . Park workers will plant 49 dogwood trees today . How many dogwood trees will the park have when the workers are finished ?
[EX A]: 83

[EX Q]: Nancy grew 2 onions , Dan grew 9 onions , and Mike grew 4 onions . They worked for 6 days on the farm . How many onions did they grow in total ?
[EX A]:
15