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.

Example Input: Context: Summer is almost here and most animals are migrating back to cooler countries. There are 87 bird families living near a mountain. If 18 new bird families joined them 

 Question: How many bird families live near the mountain now?
Example Output: 105

Example Input: Context: Rachel picked 6 ripe apples from her tree. Now the tree has 2 ripe apples and 4 unripe apples. 

 Question: How many apples did the tree have to begin with?
Example Output: 12

Example Input: Context: Jack received 5 emails and 6 letters in the morning. He then received 9 emails and 7 letters in the afternoon. 

 Question: How many letters did jack receive in the day?
Example Output:
13