If the sum of the sides of a cuboid is 60 cm, what is the sum of its length, width, and height in cm?
一个长方体的棱长之和是60厘米，它的长，宽，高之和是多少厘米？
<gadget id="calculator">60 / 4</gadget>
<output>15</output>

<result>15</result>