If the perimeter of a square woodland is 1200 meters, how much land does this woodland occupy?
一个正方形林地的周长是1200米，那么这个林地占地多少．
<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>

<result>9</result>