A sprinkler truck travels at a constant speed of 300 meters per minute, and the width of the sprinkler is 7 meters. How much ground can the sprinkler sprinkle water on after driving for 9 minutes?
一辆洒水车，每分钟匀速行驶300米，洒水的宽度是7米．洒水车行驶了9分钟，能给多大的地面洒上水？
<gadget id="calculator">300 * 9 * 7</gadget>
<output>18_900</output>

<result>18_900</result>