A cornfield is 25 meters long and 17 meters wide. If you harvest 40 kilograms of corn per square meter, how many kilograms of corn can you harvest in this cornfield?
一块玉米地长25米，宽是17米，如果每平方米收玉米40千克，这块玉米地能收多少千克玉米？
<gadget id="calculator">25 * 17 * 40</gadget>
<output>17_000</output>

<result>17_000</result>