The original price of a certain TV is 2,500 yuan, 5% off. How much is it cheaper than the original price?
某电视机原价2500元，打九五折．比原价便宜了多少钱？
<gadget id="calculator">95 / 100</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">1 - (19/20)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">2_500 * (1/20)</gadget>
<output>125</output>

<result>125</result>