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.

at billy 's restaurant a group with 2 adults and 5 children came in to eat . if each meal cost 3 dollars how much was the bill ?
21

there are 336 students in a school . if the school has 7 grades and each grade had the same number of students how many students were in each grade ?
48

zoe 's school sold 620 dollars in raffle tickets . if each ticket cost 4 dollars how many tickets did they sell ?

155