The price of a promotional TV set is 1,200 yuan, which is 25% cheaper than the original one. How much is it cheaper than the original one?
一促电视机售价1200元，比原来便宜25%，比原来便宜多少元？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1_200 * (1/4)</gadget>
<output>300</output>

<result>300</result>