If Sandro has three sons, the total number of daughters, six times the number of sons, is 3 sons * 6 daughters/son = <<3*6=18>>18 daughters.

The total number of children is 18 daughters + 3 sons = <<18+3=21>>21 children.

# Answer

21
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Sandro has six times as many daughters as sons. If he currently has three sons, how many children does he have?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
21
Sandro has six times as many daughters as sons. If he currently has three sons, how many children does he have?
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