How many integers between 200 and 300 have the sum of their digits equal to 15?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
How many integers between 200 and 300 have the sum of their digits equal to 15?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
6
How many integers between 200 and 300 have the sum of their digits equal to 15?
train