There is a book that Xiaohua reads 20 pages a day, and he just finished it in 10 days. If he wants to finish it 2 days in advance, how many pages do he need to read every day? (solution with equation)
有一本书，小华每天看20页，10天刚好看完，如果想提前2天看完，每天需要看多少页？(用方程解答)
<gadget id="calculator">20 * 10</gadget>
<output>200</output>

<gadget id="calculator">10 - 2</gadget>
<output>8</output>

<gadget id="calculator">200 / 8</gadget>
<output>25</output>

<result>25</result>