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.

Input: Consider Input: Context: Rachel picked 7 ripe apples from her tree. Now the tree has 5 apples still on it. If 3 of those are ripe and the rest are unripe

Question: How many unripe apples does the tree have now?

Output: 2

Input: Consider Input: Context: Jesse's room is 11 feet long and 15 feet wide. If she already has 16 square feet of carpet

Question: How much more carpet does she need to cover the whole floor?

Output: 149

Input: Consider Input: 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?
Output: 25