This TV set is 1200 yuan cheaper than the original price. The current price of LCD TV is 10% off. Do you know how much the original price of this TV is?
这台电视机比原价便宜了1200元．液晶电视现价九折，你知道这台电视机原价多少元吗？
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 - (9/10)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1_200 / (1/10)</gadget>
<output>12_000</output>

<result>12_000</result>