If three cubes with side lengths of 2 cm are put together to form a cuboid, what is the sum of the side lengths of the cuboid in cm?
把三个棱长为2cm的正方体拼成一个长方体，这个长方体的棱长总和是多少cm．
<gadget id="calculator">12 * 3</gadget>
<output>36</output>

<gadget id="calculator">36 - 16</gadget>
<output>20</output>

<gadget id="calculator">20 * 2</gadget>
<output>40</output>

<result>40</result>