If the side length of a square is (5/8) meters, what is its perimeter in meters?
一个正方形的边长是(5/8)米，它的周长是多少米．
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">(5/8) * 4</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>