Use iron wire to make a rectangular birdcage frame with a length of 5 decimeters, a width of 2 decimeters, and a height of 6 decimeters. How many decimeters of iron wire do you need at least?
用铁丝制作一个长5分米、宽2分米、高6分米的长方形鸟笼框架，至少需要多少分米的铁丝？
<gadget id="calculator">5 + 2 + 6</gadget>
<output>13</output>

<gadget id="calculator">13 * 4</gadget>
<output>52</output>

<result>52</result>