Xiao Ming reads a story book. He reads (1/5) of the whole book on the first day, and reads 24 pages on the second day. At this time, the ratio of the read to the unread is 2:3. How many pages does this story book have? ?
小明读一本故事书，第一天读了全书的(1/5)，第二天读了24页，这时已读的与未读的比是2：3，这本故事书共有多少页？
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

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

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(2/5) - (1/5)</gadget>
<output>1/5 = around 0.2</output>

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

<result>120</result>