During the "Shop Celebration" period, home appliance shopping malls have discounts and promotions, and all products are reduced by 20%. The original price of a color TV is 4,800 yuan. How much does it cost to buy it now?
"店庆"期间家电商场打折促销，所有商品降价20%，一台彩电原价4800元，现在买要用多少钱？
<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">4_800 * (4/5)</gadget>
<output>3_840</output>

<result>3_840</result>