A piece of rectangular glass has an area of 0.459 square meters and a width of 0.45 meters. What is its perimeter?
一块长方形玻璃的面积是0.459平方米，宽是0.45米，它的周长是多少．
<gadget id="calculator">0.459 / 0.45</gadget>
<output>1.02</output>

<gadget id="calculator">1.02 + 0.45</gadget>
<output>1.47</output>

<gadget id="calculator">1.47 * 2</gadget>
<output>2.94</output>

<result>2.94</result>