A 60-page story book, after reading (3/5) of it, how many pages have been read, and there are still ((())/(())) left unread.
一本60页的故事书，读了它的(3/5)，读了多少页，还剩((())/(()))没有读．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">60 * (3/5)</gadget>
<output>36</output>

<result>36</result>