A rectangular vegetable field is 64 meters long and 25 meters wide. If an average of 4 cabbages are planted per square meter, how many cabbages can be planted on this land?
一块长方形菜地，长64米，宽25米．如果每平方米平均种4棵白菜，这块地可种多少棵白菜？
<gadget id="calculator">64 * 25 * 4</gadget>
<output>6_400</output>

<result>6_400</result>