A rectangle is 6 cm long and 4 cm wide. If the largest triangle is cut out of this rectangle, what is the remaining area in square centimeters?
一个长方形长6厘米，宽4厘米，如果在这个长方形中剪去一个最大的三角形，剩下的面积是多少平方厘米．
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<result>12</result>