Mingming read a story book, read 20% of the whole book on the first day, and read 25% of the whole book on the second day. He found that he read 8 pages more on the second day than on the first day. Students, you know this story How many pages does the book have?
明明看一本故事书，第一天看了全书的20%，第二天看了全书的25%，他发现第二天比第一天多看了8页，同学们，你知道这本故事书有多少页吗？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/4) - (1/5)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">8 / (1/20)</gadget>
<output>160</output>

<result>160</result>