If a businessman sells a piece of clothing at a price of 600 yuan and can earn 20%, what is the original price of the piece of clothing?
一个商人把一件衣服标价600元出售，可以赚20%，则这件衣服原价是多少元．
<gadget id="calculator">600 / 1.2</gadget>
<output>500</output>

<result>500</result>