Use 3 cubes whose edge length is 3cm to form a cuboid in a row, what is the surface area of the cuboid in cm**2.
用3个棱长是3cm的正方体排成一行拼成一个长方体，拼成的长方体的表面积是多少cm**2．
<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<gadget id="calculator">18 - 4</gadget>
<output>14</output>

<gadget id="calculator">3 * 3 * 14</gadget>
<output>126</output>

<result>126</result>