Two identical cubes are put together to form a cuboid, and the surface area is reduced by 40 square centimeters. What is the original surface area of each cube?
两个相同的正方体拼成一个长方体，表面积减少40平方厘米，原来每个正方体的表面积是多少？
<gadget id="calculator">40 / 2</gadget>
<output>20</output>

<gadget id="calculator">20 * 6</gadget>
<output>120</output>

<result>120</result>