A piece of square paper with a perimeter of 1 decimeter, and a small square with a side length of 1 cm is cut off from the four corners. What is the perimeter of the remaining piece of paper?
一张周长是1分米的正方形纸，四个角上都剪去一个边长为1厘米的小正方形，剩下的这张纸的周长是多少．
<gadget id="calculator">2.5 * 4</gadget>
<output>10</output>

<gadget id="calculator">10 / 10</gadget>
<output>1</output>

<result>1</result>