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]: there are 10 stickers on a page . if you have 22 pages of stickers how many stickers do you have ?
[EX A]: 220

[EX Q]: at lunch a waiter had 10 customers and 5 of them did n't leave a tip . if he got $ 3 each from the 1 who did tip how much money did he earn ?
[EX A]: 15

[EX Q]: for bianca 's birthday 5 of her friends gave her 6 dollars . how much money did she get for her birthday ?
[EX A]:
30