The school library bought 365 science and technology books, 85 less than three times the number of story books. How many story books did you buy?
学校图书馆买来科技书365本，比故事书的本数的3倍少85本．买来故事书多少本？
<gadget id="calculator">365 + 85</gadget>
<output>450</output>

<gadget id="calculator">450 / 3</gadget>
<output>150</output>

<result>150</result>