If two identical cubes are put together to form a cuboid, the surface area is 240 square centimeters. What is the surface area of a cube?
两个完全一样的正方体拼成一个长方体，表面积是240平方厘米，一个正方体的表面积是多少平方厘米．
<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<gadget id="calculator">12 - 2</gadget>
<output>10</output>

<gadget id="calculator">240 / 10</gadget>
<output>24</output>

<gadget id="calculator">24 * 6</gadget>
<output>144</output>

<result>144</result>