Cars A and B leave the east and west stations opposite each other at the same time. In 6 hours, car A still has a distance (1/8) of the whole distance from the west station. Car B exceeds the midpoint by 54 kilometers. It is known that car A is faster than car B by 15 per hour. Kilometers, how much is the distance between the east and west stations.
甲乙两车分别从东西两站同时相对开出，6小时甲车距西站还有全程的(1/8)，乙车超过中点54千米，已知甲车每小时比乙车快15千米，东西两站相距多少．
<gadget id="calculator">15 * 6</gadget>
<output>90</output>

<gadget id="calculator">90 + 54</gadget>
<output>144</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">1 - (1/2) - (1/8)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">144 / (3/8)</gadget>
<output>384</output>

<result>384</result>