A rectangular garden covering an area of 6 hectares is 300 meters long. If a fence is built around it, what is the total length of the fence in kilometers?
一个占地6公顷的长方形花园，长是300米，如果在它的周围围上篱笆，这个篱笆的全长是多少千米？
<gadget id="calculator">10_000 / 300</gadget>
<output>100/3 = around 33.333333</output>

<gadget id="calculator">6 * (100/3)</gadget>
<output>200</output>

<gadget id="calculator">200 + 300</gadget>
<output>500</output>

<gadget id="calculator">2 / 1_000</gadget>
<output>1/500 = around 0.002</output>

<gadget id="calculator">500 * (1/500)</gadget>
<output>1</output>

<result>1</result>