To calculate how much Margo will save every month, we first need to find 22% of her monthly paycheck of $2500.
Calculation of 22% of $2500:
\[ 0.22 \times 2500 = 550 \]
So, Margo saves $550 each month.
Now, to find out how much she will save after a year (12 months), we multiply her monthly savings by the number of months:
\[ 550 \times 12 = 6,600 \]
Therefore, after a year of saving, Margo will have saved $6,600.
Answer: $6,600