For a book, the ratio of the number of pages read to the total number of pages on the first day is 1:4, and after reading 24 pages on the second day, the ratio of the number of pages read to the number of pages not read is 1:2. How many pages is this book?
一本书，第一天看的页数与总页数的比是1：4，第二天看了24页，这时已看页数与未看页数的比1：2．这本书共多少页？
<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/3) - (1/4)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">24 / (1/12)</gadget>
<output>288</output>

<result>288</result>