For a book, Xiao Ming read (1/4) of the whole book on the first day, and the ratio of the number of pages read on the second day to the number of pages read on the first day is 6:5. After two days, there are still 108 pages left unread. How many pages are there in this book?
一本书，小明第一天读了全书的(1/4)，第二天读的页数与第一天读的页数的比是6：5，两天后还剩下108页没读，这本书一共多少页？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (1/4) - (3/10)</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">108 / (9/20)</gadget>
<output>240</output>

<result>240</result>