TASK DEFINITION: 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.
PROBLEM: Paul had 42 strawberries in his basket . He picked 78 more strawberries . How many strawberries did he have then ?

SOLUTION: 120

PROBLEM: Vincent bought 10 books about animals , 1 book about outer space , and 3 books about trains . Each book cost $ 16 . How much did Vincent spend on the books ?

SOLUTION: 224

PROBLEM: There are 7 dogwood trees currently in the park . Park workers will plant 3 dogwood trees today and 2 dogwood trees tomorrow . How many dogwood trees will the park have when the workers are finished ?

SOLUTION:
12