Li Ming read the book and read 115 pages in 5 days. At this speed, how many days will it take to read a 207-page storybook? (Solve using ratio method)
李明看书，5天看了115页．照这样的速度，要看207页的一本故事书，需要多少天才能看完？(用比例方法解答)
<gadget id="calculator">115 / 5</gadget>
<output>23</output>

<gadget id="calculator">207 / 23</gadget>
<output>9</output>

<result>9</result>