A businessman marked the price of a piece of clothing at 600 yuan, but after being identified by anti-counterfeiting personnel, he sold it at 60 yuan a piece, but he could still earn 20%.
一个商人把一件衣服标价600元，经打假人员鉴别降至60元一件出售，但仍可以赚20%，如按原价出售，则这件衣服可获暴利多少元．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">60 / (6/5)</gadget>
<output>50</output>

<gadget id="calculator">600 - 50</gadget>
<output>550</output>

<result>550</result>