If a cube is cut into two cuboids, the surface area of the original cube is increased by 40 square centimeters, what is the surface area of the original cube?
把一个正方体切成两个长方体，表面积比原来的正方体增加40平方厘米，原来正方体的表面积是多少平方厘米．
<gadget id="calculator">40 / 2</gadget>
<output>20</output>

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

<result>120</result>