If three cubes with a surface area of 6 square decimeters are put together to form a cuboid, the surface area of this cuboid is reduced by how many square decimeters than the sum of the surface areas of the original three cubes.
把3个表面积都是6平方分米的正方体拼成一个长方体，这个长方体的表面积比原来三个正方体表面积之和减少了多少平方分米．
<gadget id="calculator">6 / 6</gadget>
<output>1</output>

<gadget id="calculator">1 * 4</gadget>
<output>4</output>

<result>4</result>