If 3 cubes with side lengths of 1 cm are put together to form a cuboid, the surface area of this cuboid is reduced by how much square centimeters is the sum of the surface areas of the original 3 cubes.
把3个棱长是1厘米的正方体拼成一个长方体，这个长方体的表面积比原来3个正方体的表面积的和减少多少平方厘米．
<gadget id="calculator">1 * 1 * 4</gadget>
<output>4</output>

<result>4</result>