A piece of triangular land with a height of 6m and an area of 20m**2 has a total harvest of 40kg of rice. How many kilograms of rice can be harvested on average per square meter of land?
一块高6m，面积是20m**2的三角形土地共收稻谷40kg，平均每平方米土地收稻谷多少千克？
<gadget id="calculator">40 / 20</gadget>
<output>2</output>

<result>2</result>