A square with a side length of 0.4 meters is cut in the middle and divided into two rectangles of the same size. What is the perimeter of one of the rectangles.
一个边长为0.4米的正方形，在中间剪开，分成两个同样大小的长方形．其中一个长方形的周长是多少．
<gadget id="calculator">0.4 / 2</gadget>
<output>0.2</output>

<gadget id="calculator">0.2 + 0.4</gadget>
<output>0.6</output>

<gadget id="calculator">0.6 * 2</gadget>
<output>1.2</output>

<result>1.2</result>