storybook has 84 pages in total, Xiao Ning has already read 60 pages, and plans to finish the rest in 4 days, how many pages do you read on average every day?
一本故事书共84页，小宁已经看了60页，剩下的准备4天看完，平均每天要看多少页？
<gadget id="calculator">84 - 60</gadget>
<output>24</output>

<gadget id="calculator">24 / 4</gadget>
<output>6</output>

<result>6</result>