There are 120 literary books in the school library. The number of science and technology books is (3/4) the number of literature and art books, and (1/3) the number of story books. How many story books are there?
学校图书室有文艺书120本．科技书的本数是文艺书本数的(3/4)，又是故事书本数的(1/3)，故事书有多少本？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(3/4) / (1/3)</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">120 * (9/4)</gadget>
<output>270</output>

<result>270</result>