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.

[Q]: It takes 4 apples to make 1 pie . How many apples does it take to make 504 pies ?
[A]: 2016


[Q]: Jonah added 0.3 cup of yellow raisins and 0.4 cup of black raisins to a batch of trail mix . How many cups of raisins did Jonah add in all ?
[A]: 0.7


[Q]: There are 42 walnut trees and 12 orange trees currently in the park . Park workers had to cut down 13 walnut trees that were damaged . How many walnut trees will be in the park when the workers are finished ?
[A]:
29