sprinkler travels 300 meters per minute, and the width of the sprinkler is 8 meters. How much ground can the sprinkler sprinkle water on for 9 minutes?
一辆洒水车，每分钟行使300米，洒水的宽度是8米．洒水车行使9分钟，能给多大的地面洒上水？
<gadget id="calculator">300 * 9</gadget>
<output>2_700</output>

<gadget id="calculator">2_700 * 8</gadget>
<output>21_600</output>

<result>21_600</result>