Tao Qin left home for his grandmother's house by car at 9:00 am and arrived at 5:00 pm. It is known that the average speed of the car is 60 km/h, how many kilometers is the distance from the naughty house to the grandma's house?
陶秦上午9时坐汽车从家出发去外婆家，下午5时到达．已知汽车的行驶的平均速度是60千米/小时，淘气家到外婆家的路程约是多少千米？
<gadget id="calculator">17 - 9</gadget>
<output>8</output>

<gadget id="calculator">60 * 8</gadget>
<output>480</output>

<result>480</result>