Obviously reading a book, I have already read half of the book plus 6 pages, and there are 40 pages left. How many pages are there in this book?
明明看一本书，已看了全书的一半多6页，这时还剩40页，这本书一共有多少页．
<gadget id="calculator">40 + 6</gadget>
<output>46</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">46 / (1/2)</gadget>
<output>92</output>

<result>92</result>