I read a book (1/3) on the first day, and read 6 pages on the second day, and there is still half of it left. How many pages does this book have?
一本书第一天看了(1/3)，第二天看了6页，这时还剩下一半，这本书有几页？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/2) - (1/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">6 / (1/6)</gadget>
<output>36</output>

<result>36</result>