After reading a book, after 7 days, there are still 1/3 of the whole book left. In the next 5 days, I will read a total of 60 pages, and just finished reading it. How many pages does Xiao Ming read on average every day?
读一本书，7天后，还剩余全书的(1/3)，以后5天共读60页，正好读完，小明平均每天读多少页？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">7 + 5</gadget>
<output>12</output>

<gadget id="calculator">60 / (1/3) / 12</gadget>
<output>15</output>

<result>15</result>