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: next on his checklist are the strawberry fields . there he found out that they can get 268 kg of fruit for every row of strawberry plants . if there are 7 rows of strawberry plants how many kilograms of strawberries can they harvest ?

Answer: 1876

Question: it took all of the workers 1 year to finish the animus tower and it was indeed the brightest and tallest structure that can be seen at animapolis ' skyline . if the first half of the building has 145 stories and the second half has 255 stories . how many stories do the animus tower has ?

Answer:
400