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: For Halloween Faye scored 47 pieces of candy . She ate 25 pieces the first night and then her sister gave her 40 more pieces . How many pieces of candy does Faye have now ?
Example Output: 62

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: In fourth grade there were 31 students at the start of the year . During the year 5 students left and 11 new students came to school . How many students were in fourth grade at the end ?
Example Output:
37