You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

[EX Q]: Iesha has 58 books . 19 are about school and the rest are about sports . How many books about sports does Iesha have ?
[EX A]: 39

[EX Q]: Tom purchased a football game for $ 14.02 , a strategy game for $ 9.46 , and a Batman game for $ 12.04 . How much did Tom spend on video games ?
[EX A]: 35.52

[EX Q]: Isabella ' s hair is 18 cubes long . If her hair grows 4 more inches , how long will it be ?
[EX A]:
22