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
Detroit vs Sacramento+4.1-4.1
+0.4-0.4
New York vs Portland-0.4+0.4
LA Lakers vs Philadelphia+0.4-0.4
If winner is:HomeAway
Thursday100.0*Chance in playoffs100.0*Average seed
Oklahoma City vs Brooklyn+0.5-0.5

What If

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

100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112131415Count
56-80In100192*
5551-25In1000230
5450-26In991444
5349-27In9640822
5248-28In92701,448
5147-29In8613002,381
5046-30In74232003,696
4945-31In613260005,551
4844-32In4341131207,872
4743-33In254125550010,526
4642-34In11313312112013,361
4541-35100.0%316302021720015,938
4440-3699.71517242718610017,892
4339-3797.9016182026198200019,844
4238-3887.2011092026209310020,447
4137-3959.10052819262313410019,625
4036-4025.8020161626251661018,179
3935-416.6100151425281871016,040
3834-421.00014132430207113,318
3733-430.10000413273219410,447
3632-440.00014153334147,795
3531-45Out0162341295,662
3430-46Out021139483,743
3329-47Out0531642,428
3228-48Out0219801,464
3127-49Out01090839
3026-50Out496436
2925-51Out0297245
2824-52Out298117
4-27Out10098*
Total:61.1%988877776666554221,080

* 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
Detroit vs Sacramento-0.9+0.9
If winner is:HomeAway
Thursday100.0*Lottery seed
Oklahoma City vs Brooklyn-0.1+0.1
Cleveland vs Sacramento+0.1-0.1

What If

100100100100100100100100100100100100100100100100100100100100100100100100100100100100100100
If finish:Chance will finish season at seed
TWW-L123456789101112131415161718192021222324252627282930
57-80100
5652-24991
5551-259900
5450-269721
5349-2792440
5248-2885870
5147-29731313000
5046-305421231200
4945-31342730360000
4844-321726337130120
4743-33520241623255000
4642-34110112024812010020
4541-3503214141718318370200
4440-361052141691611162601000
4339-3701067125161610172702000
4238-38012908416151118393100
4137-39000402073161313191462000
4036-4000201062141019211472100
3935-411001051513202317941000
3834-420010015132023191141000
3733-4300000261322241911300
3632-44000281726251651
3531-45015142630195
3430-46001414293616
3329-47005194134
3228-480193556
3127-4922277
3026-50021286
2925-510495
2824-52496
4-27100
Total:545444434443434343333333332222