The base and height of a triangle are both 1 cm, what is its area in cm**2.
一个三角形的底和高都是1cm，它的面积是多少cm**2．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 * (1/2)</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>