There are 480 science and technology books in the library, the number of story books is (5/8) the number of science and technology books, and the number of story books is (2/3) the number of picture books. How many picture books are there in the library?
图书馆有科技书480本，故事书本数是科技书的(5/8)，故事书本数又是图画书本数的(2/3)，求图书馆的图画书有多少本？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(5/6) / (2/3)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">480 * (5/4)</gadget>
<output>600</output>

<result>600</result>