There are 200 pages in a storybook, I read 119 pages, and read the rest in 9 days, how many pages do I read on average every day?
一本故事书有200页，看了119页，剩下的分9天看完，平均每天看多少页？
<gadget id="calculator">200 - 119</gadget>
<output>81</output>

<gadget id="calculator">81 / 9</gadget>
<output>9</output>

<result>9</result>