Find the area of a parallelogram: the height is 9.6 cm, and the base is half the height.
求平行四边形的面积：高是9.6厘米，底是高的一半．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">9.6 * (1/2) * 9.6</gadget>
<output>46.08</output>

<result>46.08</result>