Xiao Ming reads a book. He reads the whole book on the first day (2/15), and reads 6 more pages on the second day than on the first day. At this time, the number of pages he has read is the number of remaining pages (3/7). How many pages of this book has Xiao Ming read?
小明读一本书，第一天读了全书的(2/15)，第二天比第一天多读6页，这时已读的页数是剩下页数的(3/7)，这本书小明已读多少页．
<gadget id="calculator">7 + 3</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">6 / (1/30)</gadget>
<output>180</output>

<gadget id="calculator">180 * (3/10)</gadget>
<output>54</output>

<result>54</result>