There are 150 science and technology books in the school, which is exactly (3/4) of the number of story books. How many story books are there?
学校有科技书150本，恰好是故事书的本数的(3/4)，故事书有多少本？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">150 / (3/4)</gadget>
<output>200</output>

<result>200</result>