A story book has 266 pages in total. Xiao Ming has already read 140 pages, and he needs to finish reading the rest within 3 days. How many pages do he read on average every day?
一本故事书共有266页，小明已经看了140页，剩下的要在3天内看完，剩下的平均每天看多少页？
<gadget id="calculator">266 - 140</gadget>
<output>126</output>

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

<result>42</result>