An isosceles right triangle, its height is 3cm, what is its area in cm**2.
一个等腰直角三角形，它的高是3cm，它的面积是多少cm**2．
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">6 * (3/2)</gadget>
<output>9</output>

<result>9</result>