Your math is off. 1 hr 45 each way is a total of an extra 3.5 hrs a day making for a 11.5 hr day, not an 18 hr day.
The extra 45 mins each way adds 1.5 hours to the current day. That’s 7.5 extra hours per week or 33 hours per month average. Being paid an extra $2000 per month means being paid $60 per hour for the extra drive time. Call it an even $50 per hour after expenses.