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.
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Question: Nell collects baseball cards . She had 304 cards . She gave some of her cards to Jeff and now has 276 cards left . How many cards did Nell give to Jeff ?

Answer: 28

Question: Lucy has an aquarium with 212 fish . She wants to buy 68 more fish . How many fish would Lucy have then ?

Answer: 280

Question: At the arcade Dave won 25 tickets . If he spent 22 tickets on a beanie and later won 15 more tickets , how many would he have ?

Answer:
18