There is a triangular green space with a base of 300 meters and a height of 200 meters. How many hectares is the area of this green space?
有一块三角形绿地，底300米，高200米．这块绿地的面积合多少公顷？
<gadget id="calculator">200 / 2 / 10_000</gadget>
<output>1/100 = around 0.01</output>

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

<result>3</result>