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.

[EX Q]: There are 24 bicycles and 14 tricycles in the storage area at Danny 's apartment building . Each bicycle has 2 wheels and each tricycle has 3 wheels . How many wheels are there in all ?
[EX A]: 90

[EX Q]: There are 97 erasers in a box . Ernest has 17 erasers in a bag . Mark takes 97 erasers out of the box . How many erasers are left in the box ?
[EX A]: 0

[EX Q]: April 's discount flowers was having a sale where each flower was 6 dollars . If Katie bought 5 roses and 5 daisies , how much did she spend ?
[EX A]:
60