A sprinkler truck travels 50 meters per minute, and the sprinkler width is 9 meters. The sprinkler has been driving for 7 minutes, how many square meters is the sprinkler area in total?
一辆洒水车每分钟行驶50米，洒水宽度是9米．洒水车行驶了7分钟，洒水的面积一共有多少平方米？
<gadget id="calculator">50 * 7 * 9</gadget>
<output>3_150</output>

<result>3_150</result>