What is the area of an equilateral triangle with a perimeter of 6 meters and a height of 1.5 meters?
一个等边三角形周长是6米，高是1.5米，面积是多少？
<gadget id="calculator">6 / 3</gadget>
<output>2</output>

<gadget id="calculator">1.5 / 2</gadget>
<output>0.75</output>

<gadget id="calculator">2 * 0.75</gadget>
<output>1.5</output>

<result>1.5</result>