rectangular cardboard with a length of 8 decimeters and a width of 3 decimeters, cut off a square with a side length of 2 decimeters at each of the four corners, what is the perimeter of the remaining part?
一张长8分米、宽3分米的长方形纸板，在四个角落上各截去一个边长为2分米的正方形，所剩下的部分的周长是多少？
<gadget id="calculator">8 + 3</gadget>
<output>11</output>

<gadget id="calculator">11 * 2</gadget>
<output>22</output>

<result>22</result>