If a cuboid with a length of 6 cm, a width of 5 cm, and a height of 4 cm is cut into 3 small cuboids of the same size, how many square centimeters must its surface area increase?
把一个长6厘米，宽5厘米，高4厘米的长方体切成3个大小一样的小长方体后，它表面积至少要增加多少平方厘米．
<gadget id="calculator">4 * 5 * 4</gadget>
<output>80</output>

<result>80</result>