If a cuboid block whose length, width, and height are 30 cm, 20 cm, and 18 cm is cut into two identical cuboids, what is the maximum surface area of each cuboid block in square centimeters?
把一个长、宽、高分别为30厘米、20厘米、18厘米的长方体木块切割成两个完全相同的长方体，则每个长方体木块的最大表面积是多少平方厘米．
<gadget id="calculator">30 * 20</gadget>
<output>600</output>

<gadget id="calculator">30 * 18</gadget>
<output>540</output>

<gadget id="calculator">20 * 18</gadget>
<output>360</output>

<gadget id="calculator">600 + 540 + 360</gadget>
<output>1_500</output>

<gadget id="calculator">1_500 * 2</gadget>
<output>3_000</output>

<gadget id="calculator">30 * 20 * 2</gadget>
<output>1_200</output>

<gadget id="calculator">3_000 + 1_200</gadget>
<output>4_200</output>

<gadget id="calculator">4_200 / 2</gadget>
<output>2_100</output>

<result>2_100</result>