The side length of an equilateral triangle is (7/9) meters. What is the perimeter of this triangle in meters?
一个等边三角形的边长是(7/9)米．这个三角形的周长是多少米？
<gadget id="calculator">7 / 9</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">(7/9) * 3</gadget>
<output>7/3 = around 2.333333</output>

<result>7/3 = around 2.333333</result>