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.

[EX Q]: Joan found 79 seashells on the beach , she gave Mike 63 of the seashells . How many seashells does she now have ?
[EX A]: 16

[EX Q]: Paige had 8 songs on her mp3 player . If she deleted 5 old songs from it and then added 30 new songs , how many songs does she have on her mp3 player ?
[EX A]: 33

[EX Q]: Victor was helping the cafeteria workers pick up lunch trays , but he could only carry 7 trays at a time . If he had to pick up 23 trays from one table and 5 trays from another , how many trips will he make ?
[EX A]:
4