A rectangular vegetable field is 25 meters long and 16 meters wide. If 20 kilograms of vegetables are harvested per square meter, how many kilograms of vegetables can be harvested in this field?
一块长方形菜地，长25米，宽16米．如果每平方米收青菜20千克，这块地可以收青菜多少千克？
<gadget id="calculator">25 * 16 * 20</gadget>
<output>8_000</output>

<result>8_000</result>