It takes 14 hours for a passenger car to travel from point A to point B, and a truck travels 42 kilometers per hour from point B to point A at the same time. The two vehicles meet at a distance (3/7) from point B. How many kilometers are the distance between the two places?
客车从甲地到乙地用14小时，货车同时从乙地到甲地每小时行42千米，两车在距乙地(3/7)处相遇，求两地相距多少千米？
<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">1 / 14</gadget>
<output>1/14 = around 0.071429</output>

<gadget id="calculator">(4/7) / (1/14)</gadget>
<output>8</output>

<gadget id="calculator">42 * 8</gadget>
<output>336</output>

<result>336</result>