What is the sum of all the positive two-digit integers where one of the digits is four times the other?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
What is the sum of all the positive two-digit integers where one of the digits is four times the other?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
165
What is the sum of all the positive two-digit integers where one of the digits is four times the other?
train