A car leaves city A at 9 am and arrives at city B at 2 pm, traveling an average of 108 kilometers per hour. How many kilometers is the road between the two cities?
一辆汽车上午9时从甲城开出，下午2时到达乙城，平均每小时行驶108千米，两城之间的公路长多少千米？
<gadget id="calculator">108 * 5</gadget>
<output>540</output>

<result>540</result>