To calculate the monthly payment for a used car purchased for $3,200 over a 24-month period, you can use the formula:
\[ \text{Monthly Payment} = \frac{\text{Total Amount}}{\text{Number of Months}} \]
So, plugging in your values:
\[ \text{Monthly Payment} = \frac{3,200}{24} \]
Now let's calculate that:
\[ \text{Monthly Payment} = 133.33 \]
Thus, you would pay approximately $133.33 per month.
It seems that you already found a portion of this calculation in your text, showing that \( 80 \) and \( 72 \) are intermediate calculations.
So, to fill in the blank:
$133.33 per month.