The original price of a certain brand of TV is 4,800 yuan, but now it is sold at a 30% discount. How much is it cheaper?
某品牌电视机原价4800元，现在打七折出售，便宜了多少钱？
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">1 - (7/10)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">4_800 * (3/10)</gadget>
<output>1_440</output>

<result>1_440</result>