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

Example Input: A farmer estimates that he will harvest 48097 bushels of wheat . The weather is perfect during the growing season , so he harvests 684 more bushels of wheat than expected . How many bushels of wheat does the farmer harvest ?
Example Output: 48781

Example Input: Olivia and her mom were picking carrots from their garden . Olivia picked 20 and her mother picked 14 . If only 19 of the carrots were good , how many bad carrots did they have ?
Example Output: 15

Example Input: Zoe had 6 songs on her mp3 player . If she deleted 3 old songs from it and then added 20 new songs , how many songs does she have on her mp3 player ?
Example Output:
23