Hi guys I’m just here for some emotional support Finally got bit by the online casino bug and burned through like 600 bucks in the past couple days and I’m kinda freakin out

I'm trying to learn my 1.5 payouts but its getting consideringly hard since the casino that is teaching me to deal the game want me to pay it out on the dime, usually i would break it down in my head then payout but they say im taking too long to pay it out since im doing the calculations in my head, the gave me this and say to learn these. Is there an easier way

Blackjack payouts

5——7.50

6——9

7——10.50

8——12

9——13.50

10——15

11——16.50

12——18

13——19.50

14——21

15——22.50

16——24

17——25.50

18——27

19——28.59

20——30

25——37.50

30——45

35——52.50

40——60

45——67.50

50——75

55——82.50

60——90

65——97.50

70——105

75——112.50

80——120

85——127.50

90——135

95——142.50

100——150

200——300

300——450

400——600

500——750

Sat next to a couple of big spenders last night at the casino.
One of them doubled down on 13 (Jack and a 3) vs a dealer’s 8.
My eyes nearly popped out of my head in disbelief.
He was dealt a 9.

what could be the absolute max amount of edge a player could get if they shuffle track, count cards, and hole card? Assume the best possible game single deck, s17, ls, das, rsa, da2, 3:2, split up to 4 hands.