There are two commodities, the original price is 2,500 yuan, the price of commodity A is reduced by 20%, and then the price is increased by 20%; the price of commodity B is first increased by 20%, and then the price is reduced by 20%. Please compare the prices of goods A and B at the end.
有两种商品，原价都是2500元，甲商品降价20%，然后又提价20%；乙商品先提价20%，然后又降价20%．请比较最后甲、乙两种商品的价格情况．
<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">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">2_500 * (4/5) * (6/5)</gadget>
<output>2_400</output>

<result>2_400</result>