It takes 8 hours for the express train to travel from city A to city B, and 12 hours for the slow train to travel from city B to city A. The two trains depart opposite each other at the same time. When they meet, the express train travels 180 kilometers longer than the slow train. km?
快车从甲城开往乙城要8小时，慢车从乙城开往甲城要12小时，两车同时从两城相对开出，相遇时快车比慢车多行180千米，甲乙两站相距多千米？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/8) - (1/12)</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">180 / (1/24)</gadget>
<output>4_320</output>

<result>4_320</result>