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.

[Q]: After a party , 0.625 of the cake is left over . That night , big brother eats 0.25 of the cake . How much is left over after that ?
[A]: 0.375


[Q]: Paul bought 6 boxes of chocolate candy and 4 boxes of caramel candy . If each box has 9 pieces inside it , how much candy did he have total ?
[A]: 90


[Q]: The school cafeteria ordered 33 red apples and 23 green apples for students lunches . But , if only 21 students wanted fruit , how many extra did the cafeteria end up with ?
[A]:
35