The original price of a TV set is 1600 yuan, and the current price is 1200 yuan. How many percent cheaper?
一种电视机原价1600元，现价1200元．便宜了百分之几？
<gadget id="calculator">1_600 - 1_200</gadget>
<output>400</output>

<gadget id="calculator">400 / 1_600</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>