What is the area of a right triangle whose two sides are 12dm and 8dm respectively?
一个直角三角形，两条直角边分别是12dm和8dm，它的面积是多少．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">12 * 4</gadget>
<output>48</output>

<result>48</result>