A car travels 210 kilometers in 2 hours. At this speed, it takes 6 hours to travel from Jining to Beijing. How many kilometers is the distance from Jining to Beijing?
一辆汽车2小时行驶了210千米，照这样的速度，从济宁到北京需要6小时，济宁到北京的路程长多少千米？
<gadget id="calculator">210 / 2</gadget>
<output>105</output>

<gadget id="calculator">105 * 6</gadget>
<output>630</output>

<result>630</result>