story book, Xiao Ming read the whole book (2/15) on the first day, and read 8 more pages on the second day than on the first day. This means that the ratio of the number of pages read to the number of unread pages is 3:7, which means How many pages are there in this book?
一本故事书，小明第一天读了全书的(2/15)，第二天比第一天多读8页，这是已读页数与未读页数的比是3：7，这本书共有多少页？
<gadget id="calculator">3 + 7</gadget>
<output>10</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">2 / 15</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">(3/10) - (2/15) - (2/15)</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">8 / (1/30)</gadget>
<output>240</output>

<result>240</result>