How many fractions in the form $\frac{n}{99}$, with $0<n<99$, are in lowest terms?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
How many fractions in the form $\frac{n}{99}$, with $0<n<99$, are in lowest terms?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
60
How many fractions in the form $\frac{n}{99}$, with $0<n<99$, are in lowest terms?
train