There is a laptop computer, which is sold at a 15% discount by the manufacturer, at 6120 yuan each, which is a discount from the original price.
有一款手提电脑，厂家促销八五折销售，每台6120元，比原价优惠了多少元．
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">6_120 / (17/20)</gadget>
<output>7_200</output>

<gadget id="calculator">7_200 - 6_120</gadget>
<output>1_080</output>

<result>1_080</result>