The sum of the lengths of the 12 sides of a cuboid is 64 cm, and the side is a rectangle with a perimeter of 24 cm. What is its length?
一个长方体的12条棱长总和是64厘米，侧面是一个周长为24厘米的长方形，它的长是多少？
<gadget id="calculator">24 * 2</gadget>
<output>48</output>

<gadget id="calculator">64 - 48</gadget>
<output>16</output>

<gadget id="calculator">16 / 4</gadget>
<output>4</output>

<result>4</result>