The shape of a cabbage field is trapezoidal. The upper base of the field is 8 meters, the lower base is 16 meters, and the height is 12 meters. If each cabbage covers an area of 9 square decimeters on average, how many cabbages are there in total? ?
一块白菜地的形状是梯形，这块地的上底是8米，下底是16米，高是12米，如果平均每棵白菜占地9平方分米，这块地里一共有白菜多少棵？
<gadget id="calculator">8 + 16</gadget>
<output>24</output>

<gadget id="calculator">12 / 2 / 0.09</gadget>
<output>66.666667</output>

<gadget id="calculator">24 * 66.666667</gadget>
<output>1_600.000008</output>

<result>1_600.000008</result>