A and B are 4 centimeters long on a map with a scale of 1:20000000. The distance between B and C is 600 kilometers. How long should they be drawn on this map? How long does it take for a car to go from point A to point B at a speed of 200 km/h?
甲乙两地在比例尺是1：20000000的地图上长4厘米，乙丙两地相距600千米，画在这幅地图上，应画多长？一辆汽车以每小时200千米的速度从甲地经过乙地，去丙地需要多少小时？
<gadget id="calculator">800 + 600</gadget>
<output>1_400</output>

<gadget id="calculator">1_400 / 200</gadget>
<output>7</output>

<result>7</result>