A square vegetable field has a side length of 13 meters. If 10 kilograms of cabbage can be harvested per square meter, how many kilograms of cabbage can be harvested in this field?
一块正方形菜地，边长是13米，如果每平方米收白菜10千克，这块地可收白菜多少千克？
<gadget id="calculator">13 * 13 * 10</gadget>
<output>1_690</output>

<result>1_690</result>