If two small cuboids with a length of 5 cm, a width of 4 cm, and a height of 3 cm are put together to form a large cuboid, what is the minimum reduction in surface area in square centimeters?
把两个长5厘米，宽4厘米，高3厘米的小长方体拼成一个大长方体，表面积最少减少多少平方厘米．
<gadget id="calculator">3 * 4 * 2</gadget>
<output>24</output>

<result>24</result>