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: In a school there are 402 more girls than boys. If there are 739 girls 

 Question: How many boys are there in that school?
[EX A]: 337

[EX Q]: Context: Marco and his dad went strawberry picking. Together they collected strawberries that weighed 24 pounds. On the way back Marco lost 9 pounds of strawberries. Marco's strawberries now weighed 3 pounds. 

 Question: How much did his dad's strawberries weigh?
[EX A]: 12

[EX Q]: Context: Winter is almost here and most animals are migrating to warmer countries. There are 85 bird families living near the mountain. If 23 bird families flew away to africa and 37 bird families flew away to asia 

 Question: How many bird families were left near the mountain?
[EX A]:
25