If a cuboid with a length of 15 cm, a width of 12 cm and a height of 10 cm is cut into two identical small cubes, what is the minimum increase in the surface area in cm**2.
把一个长15cm，宽12cm，高10cm的长方体切成两个完全相同的小正方体后，表面积最少增加多少cm**2．
<gadget id="calculator">12 * 10 * 2</gadget>
<output>240</output>

<result>240</result>