(2/3) of a book is 40 pages, how many pages is this book?
一本书的(2/3)是40页，这本书多少页？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">40 / (2/3)</gadget>
<output>60</output>

<result>60</result>