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]: David removes 7 eggs from a jar . There were originally 27 eggs in the jar . How many eggs are left in the jar ?
[EX A]: 20

[EX Q]: There are 2 bananas in a pile on the desk . Each banana comes in a package of 17 . 7 bananas are added to the pile . How many bananas are there in the pile ?
[EX A]: 9

[EX Q]: Lizette has 813 stamps . Lizette has 125 more stamps than Minerva . How many stamps does Minerva have ?
[EX A]:
688