Find the distance between the foci of the ellipse \[9x^2 + \frac{y^2}{9} = 99.\]
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Find the distance between the foci of the ellipse \[9x^2 + \frac{y^2}{9} = 99.\]
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
8\sqrt{55}
Find the distance between the foci of the ellipse \[9x^2 + \frac{y^2}{9} = 99.\]
train