Cars A and B respectively drive from places A and B opposite each other. When they meet on the way, the distance traveled by vehicle A is (2/7) 6 kilometers longer than the distance traveled by vehicle B (2/5). (5/6) of the distance traveled is equal to (5/9) of the distance traveled by car A, then, how many kilometers are the distance between A and B?
甲、乙两车分别从A、B两地相对开出，途中相遇时，甲车所行路程的(2/7)比乙车所行路程的(2/5)多6千米，乙车所行路程的(5/6)与甲车所行路程的(5/9)相等，那么，A、B两地相距多少千米？
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">(3/5) * (2/7)</gadget>
<output>6/35 = around 0.171429</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) * (2/5)</gadget>
<output>4/25 = around 0.16</output>

<gadget id="calculator">(6/35) - (4/25)</gadget>
<output>2/175 = around 0.011429</output>

<gadget id="calculator">6 / (2/175)</gadget>
<output>525</output>

<result>525</result>