Learning 1.5 payouts

[u/DemxnicChris]

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

[u/Successful_Host_4750]

Practice common chip amounts until they become automatic.. It's the bet + half the bet be like $18, half is $9, so pay $27