81
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
How many three-digit positive integers are multiples of 11?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
81
How many three-digit positive integers are multiples of 11?
train