The sum of the last two pages of a book is 479. If Xiaohua reads 40 pages a day, how many days can he finish the book.
一本书最后两页的页码和是479，如果小华每天看40页，那么他多少天可以看完这本书．
<gadget id="calculator">479 + 1</gadget>
<output>480</output>

<gadget id="calculator">480 / 2</gadget>
<output>240</output>

<gadget id="calculator">240 / 40</gadget>
<output>6</output>

<result>6</result>