Express $1.\overline{234}$ as an improper fraction.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Express $1.\overline{234}$ as an improper fraction.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
\frac{137}{111}
Express $1.\overline{234}$ as an improper fraction.
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