Zhang Guohua read a story book, read the whole book (1/8) on the first day, and read 24 pages on the second day. The ratio of the number of pages read in two days to the number of pages in the whole book is 1:5. How much is this book? Page?
张国华看一本故事书，第一天看了全书的(1/8)，第二天看了24页，两天看的页数与全书页数的比是1：5，这本书有多少页？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/5) - (1/8)</gadget>
<output>3/40 = around 0.075</output>

<gadget id="calculator">24 / (3/40)</gadget>
<output>320</output>

<result>320</result>