The base of a triangle is 2.4cm, the height is 4cm, what is the area of the triangle in cm**2.
一个三角形的底是2.4cm，高是4cm，这个三角形的面积是多少cm**2．
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">2.4 * 2</gadget>
<output>4.8</output>

<result>4.8</result>