A story book has 234 pages, and Xiaopang read 90 pages in 5 days. At this speed, how many days can I finish this book?
一本故事书234页，小胖5天看了90页，照这样的速度，几天可以看完这本书？
<gadget id="calculator">90 / 5</gadget>
<output>18</output>

<gadget id="calculator">234 / 18</gadget>
<output>13</output>

<result>13</result>