How many square centimeters will the surface area be reduced by combining 3 cubes whose sides are 4 cm long to form a cuboid?
把3个棱长为4厘米的正方体木块，合拼成一长方体木块后，表面积减少多少平方厘米．
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">4 * 4 * 4</gadget>
<output>64</output>

<result>64</result>