A and B are 4 cm long on a map with a scale of 1:20000000. The distance between B and C is 500 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500千米，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 + 500</gadget>
<output>1_300</output>

<gadget id="calculator">1_300 / 200</gadget>
<output>13/2 = around 6.5</output>

<result>13/2 = around 6.5</result>