Li Ming reads a story book. He reads (1/3) on the first day, and (2/5) the whole book on the second day. There are 24 pages left. How many pages does this book have?
李明看一本书故事书，第一天看了(1/3)，第二天看了全书的(2/5)，还剩24页没有看，这本书共有多少页？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">1 - (1/3) - (2/5)</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">24 / (4/15)</gadget>
<output>90</output>

<result>90</result>