Xiaojing reads an extra-curricular book. He originally planned to finish it in 8 days, but he must read 35 pages a day. If he wants to finish it 3 days in advance, how many more pages should he read every day?
小京阅读一本课外读物，原计划8天读完，每天必须读35页，如果要提前3天读完，每天应比原来多读几页？
<gadget id="calculator">8 - 3</gadget>
<output>5</output>

<gadget id="calculator">8 / 5</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">35 * (8/5)</gadget>
<output>56</output>

<gadget id="calculator">56 - 35</gadget>
<output>21</output>

<result>21</result>