How many square centimeters is the surface area reduced by putting together three small cubes whose sides are 2 centimeters long to form a cuboid?
把3个棱长是2厘米的小正方体拼成一个长方体，表面积减少了多少平方厘米
<gadget id="calculator">2 * 2 * 4</gadget>
<output>16</output>

<result>16</result>