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]: there were 150 book shelves . each book shelf had 15 books . how many books were on the shelves ?
[A]: 2250


[Q]: matt and his friends were thinking of making christmas decors for the clubhouse in their neighborhood . they are to repaint 350 balls in 10 different colors . if they painted an equal number of balls for every color how many balls are there for each color ?
[A]: 35


[Q]: lex read another book with 240 pages . if he read the same number of pages for 12 days how many pages did he read every day ?
[A]:
20