Reading a 200-page story book, I have already read 74 pages, and I plan to finish the rest in 3 days. How many pages do I need to read on average every day?
看一本200页的故事书，已经看了74页，剩下的打算用3天看完，平均每天要看多少页？
<gadget id="calculator">200 - 74</gadget>
<output>126</output>

<gadget id="calculator">126 / 3</gadget>
<output>42</output>

<result>42</result>