"Children's Storybook" has 200 pages in total. After Xiaohua read it for a week, there are 39 pages left. How many pages does Xiaohua read every day?
《儿童故事书》共200页，小华看了一星期后，还剩39页，小华每天看了多少页？
<gadget id="calculator">200 - 39</gadget>
<output>161</output>

<gadget id="calculator">161 / 7</gadget>
<output>23</output>

<result>23</result>