To calculate the discount amount, we first need to find 10% of the original price, which is $66.
The discount can be calculated as follows: \[ \text{Discount} = \text{Original Price} \times \text{Discount Rate} \] \[ \text{Discount} = 66 \times 0.10 \] \[ \text{Discount} = 6.60 \]
So, the discount amount is $6.60.