A certain engineering team built a cement road and planned to pave 120 meters per day, but actually paved 30 meters more than the original plan every day, and the result was completed 14 days earlier. How long is this road in kilometers? (solution by equation)
某工程队修一条水泥路，计划每天铺120米，实际每天比原计划多铺30米，结果提前14天铺完．这条路全长多少千米？(用方程解)
<gadget id="calculator">120 * 14</gadget>
<output>1_680</output>

<gadget id="calculator">30 * 14</gadget>
<output>420</output>

<gadget id="calculator">1_680 + 420</gadget>
<output>2_100</output>

<gadget id="calculator">30 - 120</gadget>
<output>-90</output>

<gadget id="calculator">120 + (-90)</gadget>
<output>30</output>

<gadget id="calculator">2_100 / 30 / 1_000</gadget>
<output>7/100 = around 0.07</output>

<gadget id="calculator">120 * (7/100)</gadget>
<output>42/5 = around 8.4</output>

<result>42/5 = around 8.4</result>