A triangular piece of land has a base of 360 meters and a height of 250 meters. How many hectares is this land?
一块三角形土地，底是360米，高是250米．这块土地的面积是多少公顷？
<gadget id="calculator">250 / 2</gadget>
<output>125</output>

<gadget id="calculator">360 * 125</gadget>
<output>45_000</output>

<gadget id="calculator">45_000 / 10_000</gadget>
<output>9/2 = around 4.5</output>

<result>9/2 = around 4.5</result>