no don't change the math , it's perfect,  hes talking about how the "effective" payout multiplier is written on the game table  ...

so on your "Less than 32768, 50%"  pays 2x minus house percent [ 2 * 0.9835 = 1.967 ]  so in the table you should write 1.967x multiplier
but for the ones that the payout minus house percent give a long decimal number , still use the correct math , but round up the displayed number on the table page.

looks at this comparison table

odd/65536	Even multiplier	Effective multiplier	Displayed multiplier
1	65536	64454.656	64454.656
2	32768	32227.328	32227.328
4	16384	16113.664	16113.664
8	8192	8056.832	8056.832
16	4096	4028.416	4028.416
32	2048	2014.208	2014.208
64	1024	1007.104	1007.104
128	512	503.552	503.552
256	256	251.776	251.776
512	128	125.888	125.888
1000	65.536	64.454656	64.455
1500	43.6906666667	42.969770667	42.970
2000	32.768	32.227328	32.227
3000	21.8453333333	21.4848853333	21.485
4000	16.384	16.113664	16.114
6000	10.9226666667	10.7424426667	10.742
8000	8.192	8.056832	8.057
12000	5.46133333333	5.37122133333	5.371
16000	4.096	4.028416	4.028
24000	2.73066666667	2.68561066667	2.686
32000	2.048	2.014208	2.014
32768	2	1.967	1.967
48000	1.36533333333	1.34280533333	1.343

So for the page aesthetics you can display a rounded effective multiplier to 3 decimals so it looks nice.. but don't change the real math behind the calculation of the payout!

I hope this helps out