A rectangular radish field is 5 meters long and 2 meters wide. A total of 150 kilograms of radishes are harvested in this field. How many kilograms of radishes are harvested on average per square meter?
一块长方形的萝卜地，长5米，宽2米．在这块地里一共收萝卜150千克，平均每平方米收萝卜多少千克？
<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">150 / 10</gadget>
<output>15</output>

<result>15</result>