Xiao Ming reads a storybook, plans to read 12 pages a day, but actually reads 8 more pages a day, and ends up reading it two days earlier. How many pages does this storybook have?
小明看一本故事书，计划每天看12页，实际每天多看8页，结果提前两天看完．这本故事书有多少页？
<gadget id="calculator">12 + 8</gadget>
<output>20</output>

<gadget id="calculator">2 / 8</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">20 * (1/4)</gadget>
<output>5</output>

<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<result>60</result>