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

[EX Q]: Context: Winter is almost here and most animals are migrating to warmer countries. There are 41 bird families living near the mountain. If 35 bird families flew away to asia and 62 bird families flew away to africa 

 Question: How many more bird families flew away to africa than those that flew away to asia?
[EX A]: 27

[EX Q]: Context: Dave had 59 files and 15 apps on his phone. After deleting some apps and files he had 12 apps and 30 files left. 

 Question: How many apps did he delete?
[EX A]: 3

[EX Q]: Context: Paul got a box of 267 crayons for his birthday. During the school year he lost 231 crayons while he gave away 308 crayons to his friends. 

 Question: How many more crayons did he give to his friends than those he lost?
[EX A]:
77