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: 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: The total number of students absent from B. Jones High School on a Monday after a significant snow fall was 218 . The total attendance that day was 1487 . How many students , in total , attend B. Jones High School ?
Example Output: 1705

Example Input: Jerry was helping the cafeteria workers pick up lunch trays , but he could only carry 8 trays at a time . If he had to pick up 9 trays from one table and 7 trays from another , how many trips will he make ?
Example Output:
2