A square orchard with a circumference of 1200 meters harvests 18 tons of apples in total. How many tons of apples are harvested on average per hectare?
周长是1200米的正方形果园一共收苹果18吨，问平均每公顷收苹果多少吨？
<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)</gadget>
<output>9</output>

<gadget id="calculator">18 / 9</gadget>
<output>2</output>

<result>2</result>