There are 720 scientific books in the library, the number of comic books is (2/3) of scientific books, and the number of story books is comic books (8/5). How many story books are there?
图书室有科技书720本，连环画的本数是科技书的(2/3)，故事书的本数是连环画的(8/5)，故事书有多少本？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">8 / 5</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">720 * (2/3) * (8/5)</gadget>
<output>768</output>

<result>768</result>