The wholesale price of a coat is 54 yuan each, and the retail price is 63 yuan each. The auntie in the mall earned 207 yuan today. How many coats did she sell?
一件上衣批发价每件54元，零售价每件63元，商场阿姨今天赚了207元钱，卖出了多少件上衣？
<gadget id="calculator">63 - 54</gadget>
<output>9</output>

<gadget id="calculator">207 / 9</gadget>
<output>23</output>

<result>23</result>