The school has a new batch of books. There are 240 story books, which are literary books (2/3), and popular science books are literary books (4/9). How many popular science books are there?
学校新进一批图书，故事书有240本，是文艺书的(2/3)，科普读物是文艺书的(4/9)，科普读物有多少本？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">240 / (2/3)</gadget>
<output>360</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">360 * (4/9)</gadget>
<output>160</output>

<result>160</result>