Mason is three times younger than Sydney and Sydney is six years younger than Mason's father. If Mason is 20 years old, how old is his father? Let's think step by step and output the final answer after "####".
user
Sydney is 20*3 = <<20*3=60>>60 years old.
Mason’s father is 60+6 = <<60+6=66>>66 years old.
#### 66
Mason is three times younger than Sydney and Sydney is six years younger than Mason's father. If Mason is 20 years old, how old is his father?
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