An isosceles right triangle, the longest side is 12 cm, what is the area of the triangle in square centimeters?
一个等腰直角三角形，最长边是12厘米，这个三角形的面积是多少平方厘米．
<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">12 * 3</gadget>
<output>36</output>

<result>36</result>