It takes 8 hours for the express train to go from A to B, and 10 hours for the slow train to travel from B to A. The two cars leave at the same time. When they meet, the fast train travels 60 kilometers longer than the slow train. Find the distance between A and B. distance.
快车从甲地到乙地需行8小时，慢车从乙地到甲地需行10小时，两车同时相对开出，相遇时快车比慢车多行了60千米，求甲、乙两地的路程．
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/8) + (1/10)</gadget>
<output>9/40 = around 0.225</output>

<gadget id="calculator">1 / (9/40)</gadget>
<output>40/9 = around 4.444444</output>

<gadget id="calculator">(1/8) * (40/9)</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">1 - (5/9)</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">(5/9) - (4/9)</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">60 / (1/9)</gadget>
<output>540</output>

<result>540</result>