If you read 6 pages a day for a literary book, you can finish it in 20 days. If you finish reading it 8 days in advance, how many more pages should you read every day? (Solution with proportional knowledge)
一本文艺书，每天读6页，20天可以读完，如果提前8天读完，每天要比原来多读几页？(用比例知识解)
<gadget id="calculator">6 * 8</gadget>
<output>48</output>

<gadget id="calculator">6 * 20</gadget>
<output>120</output>

<gadget id="calculator">120 - 120</gadget>
<output>0</output>

<gadget id="calculator">48 + 0</gadget>
<output>48</output>

<gadget id="calculator">20 - 8</gadget>
<output>12</output>

<gadget id="calculator">48 / 12</gadget>
<output>4</output>

<result>4</result>