Xiaohua walks 210 meters in 3 minutes, the speed of the car per minute is 9 times that of Xiaohua's walking speed, how many meters does the car travel per minute?
小华3分钟步行210米，汽车每分钟的速度是小华步行速度的9倍，汽车每分钟行多少米？
<gadget id="calculator">210 / 3</gadget>
<output>70</output>

<gadget id="calculator">70 * 9</gadget>
<output>630</output>

<result>630</result>