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.

[EX Q]: Tom has 9 yellow balloons . Sara has 8 yellow balloons . How many yellow balloons do they have in total ?
[EX A]: 17

[EX Q]: There are 22 walnut trees currently in the park . Park workers will plant walnut trees today . When the workers are finished there will be 55 walnut trees in the park . How many walnut trees did the workers plant today ?
[EX A]: 33

[EX Q]: Ruby has 36 candies and 6 bananas . If she shares the candies among 9 friends , how many candies does each friend get ?
[EX A]:
4