A cuboid and a cube are put together to form a new cuboid. Its surface area is 16 square meters larger than the original one. What is the surface area of the original cube?
一个长方体和一个正方体拼成一个新的长方体，它的表面积比原来增加了16平方米，原来的正方体的表面积是多少平方米？
<gadget id="calculator">16 / 4</gadget>
<output>4</output>

<gadget id="calculator">4 * 6</gadget>
<output>24</output>

<result>24</result>