When Xiaomi reads a book, he reads 20% of the whole book on the first day, and the ratio of pages read on the second day to the first day is 5:4, leaving 132 pages unread. How many pages does this book have?
小米看一本书，第一天看了全书的20%，第二天与第一天所看页数的比是5：4，还剩下132页未看．这本书共有多少页？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(1/5) * (5/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/5) - (1/4)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">132 / (11/20)</gadget>
<output>240</output>

<result>240</result>