The base of a triangle is 24 decimeters, and the height is half of the base. What is the area of the triangle?
一个三角形的底是24分米，高是底的一半，这个三角形的面积是多少平方分米？
<gadget id="calculator">24 / 2</gadget>
<output>12</output>

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

<gadget id="calculator">24 * 6</gadget>
<output>144</output>

<result>144</result>