If three cubes with side lengths of 1 cm are put together to form a cuboid, what is the surface area in square centimetres?
三个棱长1厘米的正方体拼成一个长方体，表面积等于多少平方厘米．
<gadget id="calculator">1 * 1 * 6 * 3</gadget>
<output>18</output>

<gadget id="calculator">1 * 4</gadget>
<output>4</output>

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

<result>14</result>