The original price of a TV set is 2,500 yuan, and now the price is reduced by (1/5). How much is the price now?
一种电视机原价2500元，现在降价(1/5)．现在售价多少元？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">2_500 * (4/5)</gadget>
<output>2_000</output>

<result>2_000</result>