When two cubes are put together to form a cuboid, the surface area is reduced by 18 square centimeters. What is the volume of this cuboid in cubic centimeters?
两个正方体拼成一个长方体后，表面积就减少了18平方厘米．这个长方体的体积是多少立方厘米．
<gadget id="calculator">3 * 3 * 3 * 2</gadget>
<output>54</output>

<result>54</result>