The wholesale price of a newspaper is 2.35 yuan per copy, and the retail price is 2.5 yuan per copy. Xiao Ming earned 50.25 yuan by selling newspapers on Sunday. How many copies did he sell?
一份报纸的批发价是每份2.35元，零售价是每份2.5元，小明利用星期天卖报纸赚了50.25元钱，他卖了多少份报纸？
<gadget id="calculator">2.5 - 2.35</gadget>
<output>0.15</output>

<gadget id="calculator">50.25 / 0.15</gadget>
<output>335</output>

<result>335</result>