There is a vegetable field in the yard of Uncle Wang’s house. It is 5 meters long and 3 meters wide. Uncle Wang grows cabbage in this field. If 6 kg of cabbage is harvested per square meter, how many kg of cabbage will be harvested in this vegetable field?
王大爷家的院子有一块菜地，它的长是5米，宽是3米．王大爷在这块地里种白菜，如果每平方米收白菜6千克，这块菜地共收多少千克白菜？
<gadget id="calculator">5 * 3 * 6</gadget>
<output>90</output>

<result>90</result>