The perimeter of a square is (8/13) meters, what is its side length in meters?
一个正方形的周长是(8/13)米，它的边长是多少米．
<gadget id="calculator">8 / 13</gadget>
<output>8/13 = around 0.615385</output>

<gadget id="calculator">(8/13) / 4</gadget>
<output>2/13 = around 0.153846</output>

<result>2/13 = around 0.153846</result>