A triangular piece of land has a base of 500 meters and a height of 36 meters. What is the area of the land?
一块三角形的地，底是500米，高是36米，这块地的面积是多少？
<gadget id="calculator">36 / 2</gadget>
<output>18</output>

<gadget id="calculator">500 * 18</gadget>
<output>9_000</output>

<result>9_000</result>