Put together 4 cubes of wood with side lengths of 4 decimeters to form a cuboid with the smallest surface area. What is the surface area of this cuboid?
把4个棱长是4分米的正方体木块拼成一个表面积最小的长方体，这个长方体的表面积是多少平方分米．
<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<gadget id="calculator">4 * 8</gadget>
<output>32</output>

<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<gadget id="calculator">32 + 32 + 64</gadget>
<output>128</output>

<gadget id="calculator">128 * 2</gadget>
<output>256</output>

<result>256</result>