There are 48 crayons in the box. Kiley takes 1/4 of them away. Joe takes away half of the remaining crayons, how many crayons are left? Give me reasons, before answering the question

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Kiley takes 48 / 4 = 12 crayons. 48 - 12 = 36 crayons remain. Joe takes 36 / 2 = 18 crayons. 36 - 18 = 18 crayons left. So the final answer is 18.