A truck and a passenger car depart from Station A and Station B respectively at the same time, and the truck meets the passenger car at (3/7) of the journey. If the truck travels 63 kilometers per hour and the bus travels the entire distance in 10 hours, how many kilometers are the distance between stations A and B?
一辆货车和一辆客车分别从甲、乙二站同时相向开除，货车行到全程的(3/7)时与客车相遇．如果货车每时行63千米，客车10小时行完全程，那么甲、乙二站相距多少千米？
<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">1 - (3/7)</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">(4/7) / (3/7)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">63 * (4/3) * 10</gadget>
<output>840</output>

<result>840</result>