A square rice field with a side length of 500 meters, if 200 kilograms of fertilizer is applied per hectare, how many kilograms of fertilizer should be applied in total?
一块正方形的稻田，边长500米，如果每公顷施肥200千克，一共要施肥多少千克？
<gadget id="calculator">500 / 10_000</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">200 * 500 * (1/20)</gadget>
<output>5_000</output>

<result>5_000</result>