snowplow travels 50 meters per minute, and the width of the sweep is 3 meters. How much snow can a snowplow drive for 20 minutes?
一辆扫雪车，每分钟行驶50米，清扫的宽度是3米．扫雪车行驶20分钟，能清扫多大面积的积雪？
<gadget id="calculator">50 * 20</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 * 3</gadget>
<output>3_000</output>

<result>3_000</result>