The perimeter of a rectangle is (4/7)m, what is the side length in meters?
一个长方形的周长是(4/7)m，它的边长是多少米？
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">(4/7) / 4</gadget>
<output>1/7 = around 0.142857</output>

<result>1/7 = around 0.142857</result>