How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

If winner is:HomeAway
Wednesday100.0*Chance in playoffs100.0*Average seed
Washington vs Dallas+0.4-0.4
If winner is:HomeAway
Thursday100.0*Chance in playoffs100.0*Average seed
Boston vs Memphis-4.0+4.0
-0.4+0.4

What If

Chances based on how well the Memphis finish out the regular season.   Explain

100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112131415Count
56-80In100178*
5552-25In991166
5451-26In982320
5350-27In982673
5249-28In9551,206
5148-29In8712001,894
5047-30In78201003,097
4946-31In65295014,637
4845-32In4639121206,762
4744-33In28412136109,213
4643-34In1432299132011,847
4542-35In41829162371014,745
4441-3699.9%1718193018610017,157
4340-3798.701716252817610018,894
4239-3890.4001812242718720019,926
4138-3967.7003311232720930020,007
4037-4033.510392027231141018,607
3936-419.7000271727251551017,260
3835-421.600016162728164114,629
3734-430.2001516293015311,716
3633-440.00016193430109,064
3532-45Out0282540256,782
3431-46Out0021441424,822
3330-47Out1632603,117
3229-48Out0223751,996
3128-49Out0013861,046
3027-50Out0892654
2926-51Out595333
2825-52Out496165
3-27Out100167*
Total:58.9%887688777766655221,080

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs

Lottery

Ye of little faith, already thinking about next year. Here are the big games and what ifs for draft seeds.

Big Games

If winner is:HomeAway
Wednesday100.0*Lottery seed
Washington vs Dallas-0.1+0.1
If winner is:HomeAway
Thursday100.0*Lottery seed
Boston vs Memphis+0.9-0.9

What If

100100100100100100100100100100100100100100100100100100100100100100100100100100100100100100
If finish:Chance will finish season at seed
TWW-L123456789101112131415161718192021222324252627282930
57-80100
5653-24991
5552-259721
5451-269712
5350-279352
5249-2885105
5148-29731412000
5047-305424191100
4946-313530272501
4845-321630328110120
4744-334242318192306010
4643-3411310222189013120
4542-350421612171331947010
4441-3610621611817131625010
4340-370107511519171115260100
4239-380011701151915121527200
4138-39000330113191215161141000
4037-4001003092181017181362000
3936-41000207151220221793100
3835-420001002512202419114100
3734-43000025132125199310
3633-44000281725261551
3532-450015142729195
3431-4601414313515
3330-47015213935
3229-480193654
3128-49032572
3027-5011485
2926-51892
2825-52694
2724-53100
2623-54397
3-25100
Total:444434334444343433333333333332