The distance between A and B is 600 kilometers. A car starts from A at 7:00 a.m. and is 40 kilometers away from B at 2:00 p.m. How many kilometers does this car travel per hour on average?
甲、乙两地相距600千米，一辆汽车早上7时从甲地出发，下午2时距离乙地还有40千米，这辆汽车平均每小时行驶多少千米？
<gadget id="calculator">600 - 40</gadget>
<output>560</output>

<gadget id="calculator">14 - 7</gadget>
<output>7</output>

<gadget id="calculator">560 / 7</gadget>
<output>80</output>

<result>80</result>