Xiaohong reads a book. She reads the whole book (2/5) on the first day and 54 pages on the second day. The ratio of the number of pages she has read to the number of pages she has not read is 8:3. How many pages does this book have? Page?
小红看一本书，第一天看了全书的(2/5)，第二天看了54页，这样已看页数与未看页数的比是8：3，这本书有多少页？
<gadget id="calculator">8 + 3</gadget>
<output>11</output>

<gadget id="calculator">8 / 11</gadget>
<output>8/11 = around 0.727273</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(8/11) - (2/5)</gadget>
<output>18/55 = around 0.327273</output>

<gadget id="calculator">54 / (18/55)</gadget>
<output>165</output>

<result>165</result>