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]: Isabella ’ s hair is 18 inches long . If she gets a haircut and now her hair is 9 inches long , how much of Isabella ’ s hair got cut off ?
[A]: 9


[Q]: Elizabeth is inviting 5 friends to a party . She has 5 cookies . How many cookies will each friend get ?
[A]: 1


[Q]: If there are 7 crayons in a box and Gerald puts 6 more crayons inside , how many crayons are in the box ?
[A]:
13