The side length of a square vegetable field is 5 meters. If an average of 12 kilograms of cabbage can be produced per square meter, how many kilograms of cabbage can be produced in this vegetable field?
一块正方形菜地的边长是5米，如果平均每平方米可生产白菜12千克，那么这块菜地共产白菜多少千克？
<gadget id="calculator">5 * 5 * 12</gadget>
<output>300</output>

<result>300</result>