Wang Hua has been reading a storybook for 12 days, 12 pages a day, exactly half of it, and plans to read 4 more pages a day for the rest. How many days will it take to finish it?
王华看一本故事书，已经看了12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">12 / 16</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">12 * (3/4)</gadget>
<output>9</output>

<result>9</result>