The Hefei High-Speed Railway departs from Hefei South Railway Station at 8:00 in the morning and arrives at Huangshan at 10:00 in the morning. The high-speed rail travels an average of 200 kilometers per hour. How many kilometers is the distance between Hefei and Huangshan?
合福高铁上午8：00从合肥南站开出，上午10：00到达黄山，高铁平均每小时行驶200千米，合肥与黄山相距多少千米？
<gadget id="calculator">200 * 2</gadget>
<output>400</output>

<result>400</result>