Add $10_7 + 163_7.$ Express your answer in base 7.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Add $10_7 + 163_7.$ Express your answer in base 7.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
203_7
Add $10_7 + 163_7.$ Express your answer in base 7.
train