The perimeter of a square field is 800 meters, and 5 tons of fruits are harvested per hectare, so how many tons of fruits are harvested in this field?
一块正方形地的周长是800米，每公顷收水果5吨，那么这块地收水果多少吨？
<gadget id="calculator">800 / 4</gadget>
<output>200</output>

<gadget id="calculator">800 / 4 / 10_000</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">200 * (1/50) * 5</gadget>
<output>20</output>

<result>20</result>