During the "May 1st" holiday, Mingming's family planned to travel to Mulan Tianchi by car. He measured the distance from Huangpi to Mulan Tianchi on a map with a scale of 1:500000 to be 4 cm. If a car drives from Huangpi to Mulan Tianchi at a speed of 50 kilometers per hour, how many hours will it take to get there?
"五•一"假期中，明明一家计划自驾游到木兰天池，他在一幅比例尺是1﹕500000的地图上量得黄陂到木兰天池的距离是4厘米．如果汽车以每小时50千米的速度从黄陂开往木兰天池，需要多少小时才能到达？
<gadget id="calculator">200_000 / 10_000 / 50</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>