Wang Hong reads a storybook. If she reads 20 pages a day, she can finish it in 18 days. If she wants to finish it 3 days in advance, how many pages does she need to read every day? (Answer with proportional knowledge)
王红看一本故事书，如果每天看20页，18天刚好看完，如果要提前3天看完，她每天要看多少页？(用比例知识解答)
<gadget id="calculator">20 * 18</gadget>
<output>360</output>

<gadget id="calculator">18 - 3</gadget>
<output>15</output>

<gadget id="calculator">360 / 15</gadget>
<output>24</output>

<result>24</result>