There are 12 fewer story books than fairy tale books, and more fairy tale books than story books (1/4). How many story books are there?
故事书比童话书少12本，童话书的本数比故事书多(1/4)．故事书有多少本？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">12 / (1/4)</gadget>
<output>48</output>

<result>48</result>