The two Hound brothers won a million dollars in lottery tickets, and one of them bought a sports car. From A city to B city, the Hound elder brother needed 6 o'clock, and the Hound younger brother needed 8 o'clock. One day, the two brothers drove out from cities A and B at the same time. When they met, the elder brother of the hunting dog traveled 60 kilometers longer than the younger brother of the hunting dog. Do you know how many kilometers are the distance between cities A and B?
猎狗兄弟俩买彩票中了一百万，一人买了一辆跑车，从甲城到乙城，猎狗哥哥要用6时，猎狗弟弟要用8时．有一天，兄弟俩同时从甲、乙二城相对开出，相遇时猎狗哥哥比猎狗弟弟多行了60千米．你知道甲、乙二城的路程是多少千米吗？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/6) - (1/8)</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">(1/6) + (1/8)</gadget>
<output>7/24 = around 0.291667</output>

<gadget id="calculator">1 / (7/24)</gadget>
<output>24/7 = around 3.428571</output>

<gadget id="calculator">(1/24) * (24/7)</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">60 / (1/7)</gadget>
<output>420</output>

<result>420</result>