If the base of a triangle is 6 meters and the height is 4 meters, what is its area in square meters?
一个三角形的底是6米，高是4米，它的面积是多少平方米．
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<result>12</result>