You are given a math word problem and you are supposed to apply a single mathematical operator 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.
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Question: a garden has 52 rows and 15 columns of bean plants . how many plants are there in all ?

Answer: 780

Question: both of them were also asked to take note of the total number of chicken in the farm . ben counted a total of 9 chicken coops and daniel said that there are 60 chickens in 1 coop . how many chickens do they have in total ?

Answer: 540

Question: debby had 12 pounds of flour . if she bought another 4 pounds how many pounds would she have total ?

Answer:
16