Two cars are running toward each other from Station A and Station B at the same time. The speed of Car A is 54 km/h, which is (3/4) the speed of Car B. After 3.5 hours, the two cars meet. How many kilometers are there between A and B?
两车同时从甲、乙两站相向而行，甲车的速度是54千米/时，是乙车速度的(3/4)，3.5时后两车相遇．甲、乙两站相距多少千米？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">54 / (3/4)</gadget>
<output>72</output>

<gadget id="calculator">54 + 72</gadget>
<output>126</output>

<gadget id="calculator">126 * 3.5</gadget>
<output>441</output>

<result>441</result>