A train of passenger cars and a train of freight trains depart from stations A and B respectively at the same time. After 3 hours, the passenger train travels the whole distance (3/8) and there is still 42 kilometers more, and the freight train travels the entire distance (5/12). The ratio of the speed of the trucks is 6:5, how many kilometers are the distance between the two cars at this time?
一列客车与一列货车分别从甲、乙两站同时相对开出，3小时后，客车行了全程的(3/8)还多42千米，货车行了全程的(5/12)，客车与货车速度的比是6：5，求这时两车相距多少千米？
<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">6 / 5</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(5/12) * (6/5)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(1/2) - (3/8)</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">42 / (1/8)</gadget>
<output>336</output>

<gadget id="calculator">1 - (1/2) - (5/12)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">336 * (1/12)</gadget>
<output>28</output>

<result>28</result>