When using three cubes whose edge length is 2 decimeters to assemble a large cuboid, how much is the surface area of the assembled cuboid reduced compared with the original one?
用三个棱长是2分米的正方体拼成一个大长方体时，拼成的长方体表面积与原来相比，减少了多少？
<gadget id="calculator">2 * 2 * 4</gadget>
<output>16</output>

<result>16</result>