A rectangular vegetable field is 10 meters long and 6 meters wide. It is known that 15 kilograms of cabbage can be harvested per square meter. How many kilograms of cabbage can be harvested in this field?
一块长方形菜地，长10米、宽6米，已知每平方米收白菜15千克，这块地共收白菜多少千克？
<gadget id="calculator">10 * 6 * 15</gadget>
<output>900</output>

<result>900</result>