Use two cuboids whose length, width and height are respectively 3 decimeters, 2 decimeters and 1 decimeter to form a cuboid with the largest surface area. What is the surface area of the cuboid at this time?
用两个长、宽、高分别是3分米、2分米、1分米的长方体拼成一个表面积最大的长方体，这时长方体的表面积是多少平方分米？
<gadget id="calculator">3 + 3</gadget>
<output>6</output>

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

<gadget id="calculator">6 * 1</gadget>
<output>6</output>

<gadget id="calculator">2 * 1</gadget>
<output>2</output>

<gadget id="calculator">12 + 6 + 2</gadget>
<output>20</output>

<gadget id="calculator">20 * 2</gadget>
<output>40</output>

<result>40</result>