square sweet potato field has a circumference of 1200 meters. If 120 kilograms of pesticides are sprayed per hectare, how many kilograms of pesticides should be sprayed on this melon field?
一块正方形地瓜地，周长是1200米，如果每公顷喷洒120千克农药，问这块瓜地需喷洒多少千克农药？
<gadget id="calculator">1_200 / 4</gadget>
<output>300</output>

<gadget id="calculator">1_200 / 4 / 10_000</gadget>
<output>3/100 = around 0.03</output>

<gadget id="calculator">300 * (3/100) * 120</gadget>
<output>1_080</output>

<result>1_080</result>