There are 30 story books, and the comics are storybooks (2/3), how many comics are there?
有30本故事书，连环画是故事书的(2/3)，连环画有多少
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">30 * (2/3)</gadget>
<output>20</output>

<result>20</result>