TASK DEFINITION: You are given a math word problem and you are supposed to apply a single mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report final the numerical answer.
PROBLEM: Willie starts with 36 stickers . He gives 7 to Emily . How many stickers does Willie end with ?

SOLUTION: 29

PROBLEM: Tom has 9 yellow balloons . Sara has 8 yellow balloons . How many yellow balloons do they have in total ?

SOLUTION: 17

PROBLEM: There are 5 oak trees currently in the park . Park workers will plant 4 oak trees today . How many oak trees will the park have when the workers are finished ?

SOLUTION:
9