A parallelogram vegetable field harvests a total of 450 kg of vegetables. Its base is 12.5 meters and its height is 6 meters. How many kilograms of vegetables are harvested on average per square meter?
一块平行四边形菜地共收蔬菜450千克，它的底是12.5米，高是6米，平均每平方米收蔬菜多少千克？
<gadget id="calculator">12.5 * 6</gadget>
<output>75</output>

<gadget id="calculator">450 / 75</gadget>
<output>6</output>

<result>6</result>