Cut a square paper with a side length of 3 decimeters into two rectangular papers, how many decimeters are added to the perimeter
把一张边长是3分米的正方形纸裁成两张长方形纸，周长增加了多少分米
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<result>6</result>