Divide a cube with the sum of the sides of 120 cm into two equal cuboids, what is the surface area of each cuboid in square centimetres?
把一个棱长总和为120厘米的正方体分成相同的两个长方体，每个长方体的表面积是多少平方厘米．
<gadget id="calculator">120 / 12</gadget>
<output>10</output>

<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 * 10 * 4</gadget>
<output>200</output>

<gadget id="calculator">10 * 10 * 2</gadget>
<output>200</output>

<gadget id="calculator">200 + 200</gadget>
<output>400</output>

<result>400</result>