The original price of a color TV is 3,000 yuan, and the current price is 2,400 yuan. How much has the price been reduced?
一台彩电原价3000元，现价2400元，降价了多少．
<gadget id="calculator">3_000 - 2_400</gadget>
<output>600</output>

<gadget id="calculator">600 / 3_000</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>