The train travels 108 kilometers per hour, and the speed of the plane is 9 times that of the train. How many kilometers does the plane fly per hour?
火车每小时行108千米，飞机的速度是火车的9倍，飞机每小时飞行多少千米？
<gadget id="calculator">108 * 9</gadget>
<output>972</output>

<result>972</result>