Put 4 cubes with side lengths of 1 decimeter into a cuboid with the smallest surface area, what is its surface area in square decimeters?
把4个棱长为1分米的正方体摆成一个表面积最小的长方体，它的表面积是多少平方分米．
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

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

<gadget id="calculator">4 + 2 + 2</gadget>
<output>8</output>

<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<result>16</result>