If two rectangles with a length of 8 decimeters and a width of 4 decimeters are put together, what is the maximum perimeter of the resulting figure?
两个长为8分米，宽是4分米的长方形拼在一起，拼成的图形的周长最大有多少分米？
<gadget id="calculator">8 + 4</gadget>
<output>12</output>

<gadget id="calculator">12 * 2 * 2</gadget>
<output>48</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">48 - 8</gadget>
<output>40</output>

<result>40</result>