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 cube, the surface area will be reduced by at least how many 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正方体，表面积至少减少多少平方厘米．
<gadget id="calculator">4 * 5 * 2</gadget>
<output>40</output>

<result>40</result>