need help calculating average daily balance

Calculate the average daily balance and finance charge. (Round your answers to the nearest cent.)


30-day billing cycle
9/16 Billing date Previous balance $ 2,700
9/19 Payment $ 67 cr.
9/30 Charge: Home Depot 1,850
10/3 Payment 67 cr.
10/7 Cash advance 77


Finance charge is 1.25% on average daily balance.


Average daily balance $
Finance charge $

I've tried every which way and can't seem to figure it out.
3 days at $2700 = 8100
11 days at 2633(2700-67) =28963
3 days at 4483(2633+1850) =13449
4 days at 4416(4483-67)=17667
9 days at 4493(4416+77) =40437
total 108616 divided by 30 = 3620.53
but that's incorrect.
can anyone help me figure this out?