There are 240 comic books in the library, the story books are comic books (3/4), and the science and technology books are story books (5/6). How many science and technology books are there?
图书室有连环画240本，故事书是连环画的(3/4)，科技书又是故事书的(5/6)，科技书有多少本？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">240 * (3/4) * (5/6)</gadget>
<output>150</output>

<result>150</result>