Two trains depart from cities A and B in opposite directions at the same time. The passenger train travels 80 kilometers per hour, and the freight train travels the full distance (1/12) per hour. When the freight train is left (5/14), the passenger train has traveled the entire distance. (6/7), how many kilometers is the distance between A and B?
两列火车同时从A、B两城相向开出，客车每小时行驶80千米，货车每小时行驶全程的(1/12)，当货车还剩(5/14)时客车已行驶了全程的(6/7)，A、B两地间路程是多少千米？
<gadget id="calculator">5 / 14</gadget>
<output>5/14 = around 0.357143</output>

<gadget id="calculator">1 - (5/14)</gadget>
<output>9/14 = around 0.642857</output>

<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">(9/14) / (6/7)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(3/4) / (1/12)</gadget>
<output>9</output>

<gadget id="calculator">80 * 9</gadget>
<output>720</output>

<result>720</result>