The car travels an average of 80 kilometers per hour. A car departs from City A at 8:00 and arrives in City B at 12:00. How long is the road between A and B? ?
汽车平均每时行80千米．一辆汽车在8：00从甲城出发，12：00到达乙城．甲城和乙城间的公路长多少千米？？
<gadget id="calculator">12 - 8</gadget>
<output>4</output>

<gadget id="calculator">80 * 4</gadget>
<output>320</output>

<result>320</result>