There are 230 story books on the bookshelves, and after adding 16 books, it is three times the number of popular science books. How many popular science books are there?
图书架上有故事类图书230本，再加上16本后就是科普类图书本数的3倍，科普类图书有多少本？
<gadget id="calculator">230 + 16</gadget>
<output>246</output>

<gadget id="calculator">246 / 3</gadget>
<output>82</output>

<result>82</result>