Cars A and B start from stations A and B at the same time and drive towards each other. After half an hour, car A has driven 60% of the whole journey, and car B has traveled 4/7 of the whole journey. At this time, the distance between the two cars is 24 kilometers. Find The distance between stations A and B.
甲乙两车分别从AB两站同时出发相向而行，经过半小时后，甲车行驶了全程的60%，乙车行驶了全程的(4/7)，这时两车相距24千米，求A、B两站的距离．
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">(4/7) - 1</gadget>
<output>-3/7 = around -0.428571</output>

<gadget id="calculator">(3/5) + (-3/7)</gadget>
<output>6/35 = around 0.171429</output>

<gadget id="calculator">24 / (6/35)</gadget>
<output>140</output>

<result>140</result>