If the three sides of an equilateral triangle are extended (1/3), by what percentage is the area of the new triangle increased compared to the original?
将一个等边三角形的三条边分别延长(1/3)，得到的新角形的面积比原来增加了几分之几？
<gadget id="calculator">16 / 9</gadget>
<output>16/9 = around 1.777778</output>

<gadget id="calculator">(16/9) - 1</gadget>
<output>7/9 = around 0.777778</output>

<result>7/9 = around 0.777778</result>