cuboid with a length and width of 3 cm and a height of 9 cm is cut into three small cubes with side lengths of 3 cm. The surface area of these small cubes is increased by how many square centimeters compared with the surface area of the original cuboid.
一个长方体，长和宽都是3厘米，高是9厘米，把它截成3个棱长是3厘米的小正方体，这些小正方体表面积和比原来长方体的表面积增加了多少平方厘米．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">3 * 3 * 4</gadget>
<output>36</output>

<result>36</result>