A novel has 500 pages. After reading it for a week, Xiaohong still has 346 pages left. How many pages does she read on average every day?
一本小说有500页，小红看了一个星期后还剩346页没有看，她平均每天看多少页？
<gadget id="calculator">500 - 346</gadget>
<output>154</output>

<gadget id="calculator">154 / 7</gadget>
<output>22</output>

<result>22</result>