There is a trapezoidal vegetable field, the upper base is 32 meters, the lower base is 48 meters, and the height is 16 meters. If 30 kilograms of cabbage is harvested per square meter, how many kilograms of cabbage are harvested in this land?
有一块梯形的菜地，上底是32米，下底是48米，高是16米．如果每平方米收白菜30千克，这块地一共收白菜多少千克？
<result>1_920</result>