If the sum of the lengths of the sides of a cuboid is 60 cm, what is the sum of the lengths of the three different sides of the cuboid in cm?
一个长方体的棱长总和是60厘米，这个长方体三条不同棱长的和是多少厘米．
<gadget id="calculator">60 / 4</gadget>
<output>15</output>

<result>15</result>