Xiaodong reads a book. He reads (1/6) of the whole book on the first day, and reads 24 pages on the second day. At this time, the ratio of the number of pages he has read to the number of remaining pages is 11:19. How many pages does the book have.
小东看一本书，第一天看了全书的(1/6)，第二天看了24页，这时已看的页数和剩下的页数之比是11：19，这本书有多少页．
<gadget id="calculator">11 + 19</gadget>
<output>30</output>

<gadget id="calculator">11 / 30</gadget>
<output>11/30 = around 0.366667</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(11/30) - (1/6)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">24 / (1/5)</gadget>
<output>120</output>

<result>120</result>