The width of the rectangle is long (5/8), and after the width is increased by 7 decimeters, it becomes a square. What is the perimeter of the square in decimeters.
长方形的宽是长的(5/8)，宽增加7分米后，变成正方形．正方形的周长是多少分米．
<gadget id="calculator">56 / 3</gadget>
<output>56/3 = around 18.666667</output>

<gadget id="calculator">(56/3) * 4</gadget>
<output>224/3 = around 74.666667</output>

<result>224/3 = around 74.666667</result>