A parallelogram vegetable field harvests a total of 440 kg of vegetables at a time. It is known that its base is 12.5 meters and its height is 5.5 meters. How many kilograms of vegetables are harvested on average per square meter this time?
一块平行四边形菜地一次共收蔬菜440千克，已知它的底是12.5米，高是5.5米．这次平均每平方米收蔬菜多少千克？
<gadget id="calculator">12.5 * 5.5</gadget>
<output>68.75</output>

<gadget id="calculator">440 / 68.75</gadget>
<output>6.4</output>

<result>6.4</result>