A bicycle travels 18 kilometers per hour, a truck travels 4 times faster than a bicycle, and a train travels 3 times faster than a truck. How many kilometers per hour does the train travel?
自行车每小时行驶18千米，卡车的速度是自行车的4倍，火车的速度是卡车的3倍，火车每小时行驶多少千米？
<gadget id="calculator">18 * 4 * 3</gadget>
<output>216</output>

<result>216</result>