Xiaoling reads a book and has already read 120 pages, which happens to be (2/3) of the whole book. How many pages does this book have?
小玲看一本书，已经看了120页，正好是全书的(2/3)，这本书有多少页？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">120 / (2/3)</gadget>
<output>180</output>

<result>180</result>