The ratio of science books to story books in the library is 1:5, there are 85 science books, how many story books are there.
图书室里科技书与故事书的比是1：5，科技书有85本，故事书有多少本．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">85 / (1/5)</gadget>
<output>425</output>

<result>425</result>