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.

a group of 8 friends were dressing as pirates for halloween . if each costume cost 5 dollars how much did they spend ?
40

a garden has 52 rows and 15 columns of bean plants . how many plants are there in all ?
780

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