At first, there were 7*12=<<7*12=84>>84 chairs.

Later, there were 84+11=<<84+11=95>>95 chairs altogether.

# Answer

95
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
For a wedding, chairs were arranged in 7 rows with 12 chairs in each row. Some people arrived late and grabbed 11 extra chairs, placing them at the back. How many chairs were there altogether?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
95
For a wedding, chairs were arranged in 7 rows with 12 chairs in each row. Some people arrived late and grabbed 11 extra chairs, placing them at the back. How many chairs were there altogether?
train