A square orchard has a perimeter of 2400 meters, how many hectares does this orchard have?
一块正方形的果园，周长是2400米，这个果园有多少公顷？
<gadget id="calculator">2_400 / 4</gadget>
<output>600</output>

<gadget id="calculator">2_400 / 4 / 10_000</gadget>
<output>3/50 = around 0.06</output>

<gadget id="calculator">600 * (3/50)</gadget>
<output>36</output>

<result>36</result>