The length of a rectangular vegetable field is 4 meters, the width is 3 meters, and 25 kilograms of cabbage can be harvested per square meter. How many kilograms of cabbage can be harvested in total?
长方形菜地的长是4米，宽是3米，每平方米收白菜25千克，一共可以收白菜多少千克．
<gadget id="calculator">4 * 3 * 25</gadget>
<output>300</output>

<result>300</result>