Xiao Ming reads a story book, and reads part of it in the morning. At this time, the number of pages read is 1/9 of the number of unread pages. In the afternoon, he reads 14 more pages than in the morning. At this time, the number of pages read is equal to the number of unread pages. (1/3) of the number of pages, how many pages does this book have?
小明读一本故事书，上午读了一部分，这时已读的页数是未读的页数的(1/9)，下午比上午多读14页，这时已读的页数是未读的页数的(1/3)，这本书共有多少页？
<gadget id="calculator">11 + 9</gadget>
<output>20</output>

<gadget id="calculator">11 / 20</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">1 + 9</gadget>
<output>10</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/10) * 2</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(11/20) - (1/5)</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">14 / (7/20)</gadget>
<output>40</output>

<result>40</result>