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]: There are 3 short trees and 6 tall trees currently in the park . Park workers will plant 9 short trees today . How many short trees will the park have when the workers are finished ?
[A]: 12


[Q]: There are 46 rulers in the drawer . Tim took 25 rulers from the drawer . How many rulers are now in the drawer ?
[A]: 21


[Q]: After a party , 0.625 of the cake is left over . That night , big brother eats 0.25 of the cake . How much is left over after that ?
[A]:
0.375