For a literary book, Xiao Ming reads (1/3) of the whole book on the first day, and the rest (3/5) on the second day, and there are 48 pages left. How many pages are there in this book?
一本文艺书，小明第一天看了全书的(1/3)，第二天看了余下的(3/5)，还剩下48页，这本书共有多少页．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(2/3) * (3/5)</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">48 / (4/15)</gadget>
<output>180</output>

<result>180</result>