The perimeter of a square is (4/5) meters, what is its side length in meters?
一个正方形的周长是(4/5)米，它的边长是多少米？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/5) / 4</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>