A kind of color TV is sold at 1,920 yuan each, which is a 4% discount compared to the original one. How much is the discount?
一种彩电，每台卖1920元，比原来每台优惠4%，优惠了多少钱？
<gadget id="calculator">4 / 100</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">1 - (1/25)</gadget>
<output>24/25 = around 0.96</output>

<gadget id="calculator">1_920 / (24/25)</gadget>
<output>2_000</output>

<gadget id="calculator">2_000 * (1/25)</gadget>
<output>80</output>

<result>80</result>