A storybook, Ding Ding read an average of 23 pages a day in the first 3 days, and an average of 28 pages a day in the next 6 days. How many pages does this storybook have?
一本故事书，丁丁前3天平均每天看23页，后6天平均每天看28页，这本故事书有多少页？
<gadget id="calculator">3 * 23</gadget>
<output>69</output>

<gadget id="calculator">6 * 28</gadget>
<output>168</output>

<gadget id="calculator">69 + 168</gadget>
<output>237</output>

<result>237</result>