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.

Input: Consider Input: Context: Marco and his dad went strawberry picking. Together they collected strawberries that weighed 24 pounds. On the way back Marco lost 9 pounds of strawberries. Marco's strawberries now weighed 3 pounds. 

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

Output: 12


Input: Consider Input: Context: Because of the decision Sofia asked the students to suggest specific types of food. If 479 students suggested adding mashed potatoes while 489 suggested adding bacon to the menu 

 Question: How many more students suggested bacon than those that suggested mashed potatoes?

Output: 10


Input: Consider Input: 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?


Output: 10