You are given a math word problem and you are supposed to only use subtraction 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: Context: Marco and his dad went strawberry picking. Marco's strawberries weighed 30 pounds. If together their strawberries weighed 47 pounds. 

 Question: How much more did his strawberries weigh than his dad's?

Answer: 13


Question: Context: There are 4 different books and 17 different movies in the ' crazy silly school ' series. If you read 19 of the books and watched 7 of the movies 

 Question: How many more movies do you still have to watch?

Answer: 10


Question: Context: At the arcade Dave had won 7 tickets. He used some tickets to buy toys. If he still has 2 tickets left 

 Question: How many tickets did Dave use to buy toys?

Answer:
5