If the length, width, and height of a cuboid are 7 cm, 6 cm, and 5 cm respectively, what is the sum of the lengths of its sides in cm?
一个长方体的长、宽、高分别是7厘米、6厘米和5厘米，它的棱长总和是多少厘米．
<gadget id="calculator">7 + 6 + 5</gadget>
<output>18</output>

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

<result>72</result>