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.

The school cafeteria ordered 25 red apples and 17 green apples for students lunches . But , if only 10 students wanted fruit , how many extra did the cafeteria end up with ?
32

For a birthday party George bought 10 regular sodas and 22 diet sodas . If his fridge would only hold 4 on each shelf , how many shelves would he fill up ?
8

A store had 34 oranges in a bin . If they threw away 20 of the old ones and put 13 new ones in the bin how many would be in the bin ?

27