Xiao Ming reads a book with a total of 200 pages. He reads half of the book in the first 5 days, and then reads 5 more pages every day. How long will it take to finish it?
小明看一本书，共200页，开始5天看了这本书的一半，以后每天多看5页，还要几天才能看完？
<gadget id="calculator">200 / 2 / 5</gadget>
<output>20</output>

<gadget id="calculator">20 + 5</gadget>
<output>25</output>

<gadget id="calculator">200 / 2 / 25</gadget>
<output>4</output>

<result>4</result>