If the length, width, and height of a cuboid are 8 cm, 4 cm, and 6 cm respectively, what is the sum of the lengths of its sides?
长方体的长、宽、高分别是8厘米、4厘米、6厘米，则它的棱长的总和是多少
<gadget id="calculator">8 + 4 + 6</gadget>
<output>18</output>

<gadget id="calculator">18 * 4</gadget>
<output>72</output>

<result>72</result>