The side length of a square wheat field is 40 meters. The field harvests a total of 800 kilograms of wheat. How many kilograms of wheat are harvested on average per square meter?
一块正方形的小麦田的边长是40米，这块地共收小麦800千克，平均每平方米收小麦多少千克？
<gadget id="calculator">40 * 40</gadget>
<output>1_600</output>

<gadget id="calculator">800 / 1_600</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>