Obviously read a book, read 4 pages a day, and finish it in 12 days. If you read 6 pages a day, how many days can you finish it?
明明读一本书，每天看4页，12天看完，如果每天看6页，几天可以看完？
<gadget id="calculator">12 * 4</gadget>
<output>48</output>

<gadget id="calculator">48 / 6</gadget>
<output>8</output>

<result>8</result>