Xiao Ming reads a storybook, and plans to read 20 pages a day and finish it in 10 days. I actually read 5 more pages per day than planned, how many days can I actually read it?
小明看一本故事书，计划每天看20页，10天看完．实际每天比计划多看5页，实际几天可以看完？
<gadget id="calculator">20 + 5</gadget>
<output>25</output>

<gadget id="calculator">10 / 25</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">20 * (2/5)</gadget>
<output>8</output>

<result>8</result>