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.

[Q]: Adam had 33 books . If he sold 11 of them and used the money he earned to buy 23 new books , how many books would Adam have ?
[A]: 45


[Q]: John can read 4 books a day . John reads every Monday and Tuesday . How many books would John read in 6 weeks ?
[A]: 48


[Q]: A waiter at ' The Greasy Spoon ' restaurant had 26 customers to wait on . During the lunch rush he added another 27 customers . If 27 of the customers did n't leave him a tip , how many customers did leave a tip ?
[A]:
26