A train departs from A at 10 am and arrives at B at 4 pm. If the average speed of this train is 80 kilometers per hour, how many kilometers are there between places A and B?
一列火车上午10时从甲地出发，下午4时到达乙地．假如这列火车的平均速度是每小时行80千米，甲乙两地相距多少千米？
<gadget id="calculator">12 - 10</gadget>
<output>2</output>

<gadget id="calculator">2 + 4</gadget>
<output>6</output>

<gadget id="calculator">80 * 6</gadget>
<output>480</output>

<result>480</result>