What is the area of an isosceles right triangle whose two sides add up to 8 decimeters?
一个等腰直角三角形，两条直角边之和为8分米，它的面积是多少平方分米
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<result>8</result>