When Xiao Ming reads a book, he has read 60% of it, and there are 480 pages left. How many pages is this book?
小明看一本书，已经看了60%，还剩下480页没有看．这本书共多少页？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">480 / (2/5)</gadget>
<output>1_200</output>

<result>1_200</result>