A triangular billboard with a base length of 2.4m and a height of 1.2m, what is its area in m**2.
一块三角形的广告牌，底长2.4m，高是1.2m，它的面积是多少m**2．
<gadget id="calculator">1.2 / 2</gadget>
<output>0.6</output>

<gadget id="calculator">2.4 * 0.6</gadget>
<output>1.44</output>

<result>1.44</result>