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

bryan has always been fond of studying rocks and minerals . he has a room full of books about and samples of the different types of rocks . 1 particular day he went in the room to take a look at his mineral samples . if he has 65 samples of minerals per shelf and he has a total of 7 shelves how many mineral samples does he have ?
455

lana had 72 extra nickels . if she put them into stacks with 8 in each stack how many stacks could she make ?
9