The shape of a vegetable field is a triangle, its base is 30 meters, and its height is 20 meters. If 8 Chinese cabbages are planted per square meter, how many Chinese cabbages can be planted in this field?
一块菜地的形状是三角形，它的底是30米，高是20米，如果每平方米种8棵大白菜，这块地一共可以种多少棵大白菜？
<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">30 * 10</gadget>
<output>300</output>

<gadget id="calculator">8 * 300</gadget>
<output>2_400</output>

<result>2_400</result>