Using 27 small cubes of 1 cubic centimeter to form a cuboid or cube, what is the maximum reduction in surface area in square centimeters?
用27个1立方厘米的小正方体木块，拼成一个长方体或正方体，表面积最多减少多少平方厘米．
<gadget id="calculator">1 * 1 * 6 * 27</gadget>
<output>162</output>

<gadget id="calculator">3 * 3 * 6</gadget>
<output>54</output>

<gadget id="calculator">162 - 54</gadget>
<output>108</output>

<result>108</result>