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

Context: Robin's hair was 14 inches long. It grew by 8 inches. Then he cut off 20 inches.

Question: How long is his hair now?
2

Context: Winter is almost here and most animals are migrating to warmer countries. There are 18 bird families living near the mountain. If 38 bird families flew away to africa and 80 bird families flew away to asia

Question: How many bird families flew away for the winter?
118

Context: Paul got a box of some crayons for his birthday. During the school year he gave 52 crayons to his friends while he lost 535 crayons. If he only had 492 crayons left

Question: How many crayons had been lost or given away?
587