A rectangular experimental field with a length of 400 meters and a width of 125 meters has a total harvest of 90,000 kilograms of rice. How many kilograms of rice are harvested per hectare on average?
一块长400米，宽125米的长方形实验田，一共收稻谷90000千克．平均每公顷收稻谷多少千克？
<gadget id="calculator">125 / 10_000</gadget>
<output>1/80 = around 0.0125</output>

<gadget id="calculator">400 * (1/80)</gadget>
<output>5</output>

<gadget id="calculator">90_000 / 5</gadget>
<output>18_000</output>

<result>18_000</result>