If a cuboid with a length of 12 cm, a width of 9 cm and a height of 5 cm is cut into two cuboids, what is the maximum sum of the surface areas of the two cuboids in square centimeters?
将一个长12厘米、宽9厘米、高5厘米的长方体，切成两个长方体，两个长方体的表面积的总和最多是多少平方厘米？
<gadget id="calculator">12 * 9</gadget>
<output>108</output>

<gadget id="calculator">9 * 5</gadget>
<output>45</output>

<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<gadget id="calculator">108 + 45 + 60</gadget>
<output>213</output>

<gadget id="calculator">2 * 213</gadget>
<output>426</output>

<gadget id="calculator">2 * 108</gadget>
<output>216</output>

<gadget id="calculator">426 + 216</gadget>
<output>642</output>

<result>642</result>