Xiao Ming reads a book, 12 pages a day, and can finish it in 8 days. If you read 4 more pages a day, how many days can you finish reading?
小明读一本书，每天读12页，8天可以读完．如果每天多读4页，几天可以读完？
<gadget id="calculator">8 + 4</gadget>
<output>12</output>

<gadget id="calculator">8 / 12</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">12 * (2/3)</gadget>
<output>8</output>

<result>8</result>