A piece of iron wire can just enclose a square with a side length of 8 decimeters. If a rectangle with a width of 8 decimeters is surrounded by this piece of iron wire, how many decimeters is the length of this rectangle?
一根铁丝正好能围成边长为8分米的正方形，如果用这佷铁丝围成宽为8分米的长方形，那么这个长方形的长是多少分米？
<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<gadget id="calculator">32 / 2</gadget>
<output>16</output>

<gadget id="calculator">16 - 8</gadget>
<output>8</output>

<result>8</result>