Xiaoling reads a storybook, if she reads 15 pages a day, she can finish it in 8 days, if she reads 5 more pages a day, how many days can she finish it?
小玲看一本故事书，如果每天看15页，8天能看完，如果每天多看5页，几天能看完？
<gadget id="calculator">15 + 5</gadget>
<output>20</output>

<gadget id="calculator">8 / 20</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">15 * (2/5)</gadget>
<output>6</output>

<result>6</result>