Additional question: Xiao Ming reads a book and reads part of it on the first day. The ratio of the number of pages read to unread is 2:7. After reading 46 pages on the second day, the ratio of pages read to unread is 5:6. How many pages does this book have?
附加题：小明看一本书，第一天读了一部分，已读的和未读的页数比是2：7，第二天读了46页，已读的和未读的页数比是5：6．这本书共有多少页？
<gadget id="calculator">6 + 5</gadget>
<output>11</output>

<gadget id="calculator">5 / 11</gadget>
<output>5/11 = around 0.454545</output>

<gadget id="calculator">2 + 7</gadget>
<output>9</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">(5/11) - (2/9)</gadget>
<output>23/99 = around 0.232323</output>

<gadget id="calculator">46 / (23/99)</gadget>
<output>198</output>

<result>198</result>