An extracurricular reading has 320 pages in total. Xiao Ming has read it for 8 days, with an average of 19 pages per day, and plans to finish the rest in 7 days, how many pages per day on average?
一本课外读物共320页．小明已经看了8天，平均每天看19页，剩下的计划7天看完，剩下的平均每天看多少页？
<gadget id="calculator">19 * 8</gadget>
<output>152</output>

<gadget id="calculator">320 - 152</gadget>
<output>168</output>

<gadget id="calculator">168 / 7</gadget>
<output>24</output>

<result>24</result>