How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 9/10100.0*Chance in playoffs100.0*Average seed
Doncaster 24 Newcastle 28 +5.1
-0.2
Keighley 28 Workington 6 Out
-0.5
Week of 9/17None

What If

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

100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-LplayoffsChampionship12345678Count
73-80OutNo1001,337,795,616*
Total:OutNo1001,337,795,616

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs