A storybook has 300 pages, and after Li Qiang read it for 8 days, there are 60 pages left. How many pages does he read on average every day?
一本故事书有300页，李强看了8天后，还剩60页，他平均每天看几页？
<gadget id="calculator">300 - 60</gadget>
<output>240</output>

<gadget id="calculator">240 / 8</gadget>
<output>30</output>

<result>30</result>