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: Lisa starts with 91 bananas . Maria gives Lisa 8 more . How many bananas does Lisa end with ?
Example Output: 99

Example Input: Ned was helping the cafeteria workers pick up lunch trays , but he could only carry 5 trays at a time . If he had to pick up 5 trays from one table and 5 trays from another , how many trips will he make ?
Example Output: 2

Example Input: At a company picnic 23 managers and 7 employees decided to start a game of volleyball . If they split into 6 teams how many people would be on each team ?
Example Output:
5