An airplane flies 820 kilometers per hour, and it takes 7 hours to fly from Beijing to Moscow. How many kilometers is the flight from Beijing to Moscow?
一架飞机每小时飞行820千米，从北京到莫斯科需要飞行7小时，北京到莫斯科航线长多少千米？
<gadget id="calculator">820 * 7</gadget>
<output>5_740</output>

<result>5_740</result>