Cars A and B are traveling towards each other from places A and B at the same time, with a speed ratio of 5:3. Car A traveled the entire distance (3/7) and then traveled another 66 kilometers, just in time to meet Car B. How many kilometers are there between A and B?
甲乙两车分别从A、B两地同时相向而行，速度比是5：3．甲车行了全程的(3/7)后又行了66千米，正好与乙车相遇．A、B两地相距多少千米？
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">(5/8) - (3/7)</gadget>
<output>11/56 = around 0.196429</output>

<gadget id="calculator">66 / (11/56)</gadget>
<output>336</output>

<result>336</result>