You are given a math word problem and you are supposed to apply multiple mathematical operators like addition, subtraction, multiplication, or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

[EX Q]: katie spent a total $ 350 on her whole stay in the island . if she spent $ 125 on food and $ 135 on hotel rooms how much did she spend on buying other stuff ?
[EX A]: 90

[EX Q]: olivia had 7 math problems to complete . she spent about 4 minutes on each problem and then she spent 3 minutes checking her answers . how many minutes did she spend total ?
[EX A]: 31

[EX Q]: sam has 58 power ranger stickers . he bundles them up in 2 boxes . if there are 23 power ranger stickers in the first box how many more power ranger stickers are there in the second box than the first box ?
[EX A]:
12