A square vegetable field with a side length of 17 meters can harvest 40 kilograms of vegetables per square meter. How many kilograms of vegetables can be harvested in this piece of land?
一个正方形的菜地，边长是17米，每平方米可以收青菜40千克，这块地一共可以收青菜多少千克？
<gadget id="calculator">17 * 17 * 40</gadget>
<output>11_560</output>

<result>11_560</result>