There is a rectangular wheat field, the length is 800 meters, and the width is half of the length. A total of 134,400 kilograms of wheat is harvested. How many kilograms of wheat are harvested on average per hectare?
有一块长方形麦地，长800米，宽是长的一半，共收小麦134400千克，平均每公顷收小麦多少千克？
<gadget id="calculator">800 / 2</gadget>
<output>400</output>

<gadget id="calculator">400 / 10_000</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">800 * (1/25)</gadget>
<output>32</output>

<gadget id="calculator">134_400 / 32</gadget>
<output>4_200</output>

<result>4_200</result>