I have been reading it for 4 days, 12 pages a day, exactly half of it, and plan to read 4 more pages a day for the rest. How many days will it take to finish watching?
我已看了4天，每天看12页，正好看了一半，余下的计划每天多看4页．还要几天可以看完？
<gadget id="calculator">12 + 4</gadget>
<output>16</output>

<gadget id="calculator">4 / 16</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">12 * (1/4)</gadget>
<output>3</output>

<result>3</result>