Xiao Min reads an extra-curricular book, and has read (1/3) of the whole book, leaving 112 pages unread. How many pages does this book have?
小敏看一本课外书，已看了全书的(1/3)，还剩112页未看．这本书共有多少页？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">112 / (2/3)</gadget>
<output>168</output>

<result>168</result>