The original price of a commodity is 5 yuan, the price will be increased by 20% first, and then the price will be reduced by 20% soon, what is the current price
一件商品原价5元，先加价20%后，不久再降价20%，现价是多少元
<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">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">5 * (6/5) * (4/5)</gadget>
<output>24/5 = around 4.8</output>

<result>24/5 = around 4.8</result>