A car departs at 7:00 and arrives at its destination at 15:00. It is known that a car travels an average of 80 kilometers per hour, how many kilometers has it traveled in total?
一辆汽车7：00出发，15：00到达目的地．已知汽车平均每小时行80千米，它一共行了多少千米？
<gadget id="calculator">15 - 7</gadget>
<output>8</output>

<gadget id="calculator">80 * 8</gadget>
<output>640</output>

<result>640</result>