Xiao Ming borrowed a novel. After reading it for 2 days, the number of unread pages was 3 times the number of pages he had read. After reading another 24 pages, the number of pages he had not read was 1.4 times the number of pages he had read. How many pages does the book have?
小明借来一本小说，看了2天后，未看的页数是已看的页数的3倍，又看了24页后，未看的页数是已看页数的1.4倍，这本书有多少页？
<gadget id="calculator">5 + 7</gadget>
<output>12</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">1 + 3</gadget>
<output>4</output>

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

<gadget id="calculator">(5/12) - (1/4)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">24 / (1/6)</gadget>
<output>144</output>

<result>144</result>