Aunt Zhou sold 2 sets of fashion in the morning, each for 480 yuan. Aunt Zhou said: "The first set of fashion was sold 20% higher than the purchase price, and the second set was sold at 20% lower than the purchase price. The money earned and the money lost just offset the money lost. I have been busy all morning." Do you think Aunt Zhou is right? Please analyze it from a mathematical point of view.
周阿姨上午卖出2套时装，每套都是480元．周阿姨说："第一套时装比进价高20%售出，第二套时装比进价降低了20%售出，赚的钱和赔的钱正好抵消，白忙了一上午．"你认为周阿姨说得对吗？请从数学角度加以分析说明．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">480 / (4/5)</gadget>
<output>600</output>

<gadget id="calculator">600 - 480</gadget>
<output>120</output>

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

<gadget id="calculator">480 / (6/5)</gadget>
<output>400</output>

<gadget id="calculator">480 - 400</gadget>
<output>80</output>

<gadget id="calculator">120 - 80</gadget>
<output>40</output>

<result>40</result>