Lets look at $25NL as if it were a 9 to 5 job.

Hypothetical situation:

There will be a number of assumptions, these are:
1. Variance does not exist, win rate remains consistent and exact.
2. 20BB/100 hands is attainable
3. It takes 1 minute to play 1 hand, at one table.
4. Maximum number of tables is 8
5. Can consistently work at 8 tables all day.

1 hand/minute x 8 tables = 8 hands/minute.
8 x 60 = hands per hour = 480

BB = $0.50
20BB = $10

480 divided by 100 = 4.8
4.8 x $10 = $48
$48/hour attainable.

9 to 5 = 8 hours
-1 hour lunch break
1 day = 7 hours
7 x 5 = 35 = 1 week

35 hours of $48/hour equals total profit of $1680
hands per week = ~17K

Yearly Figures

year = 52 weeks -4 weeks holidays
year = 48 weeks

yearly profit = $80640

Closing remarks
poker is good.