TV set originally cost 10,000 yuan each, but now it costs 6,000 yuan each. How much has it been reduced?
一种电视机，原来每台售价10000元，现在每台售价6000元，降低了百分之几？
<gadget id="calculator">10_000 - 6_000</gadget>
<output>4_000</output>

<gadget id="calculator">4_000 / 10_000</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>