How are these numbers calculated?

Big Games

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

Week of 9/9100.0*Average seed
Scarborough 1 Durham 2 +0.2
Durham 7 Hamilton 3 +0.2
Hamilton 4 London 3 +0.1
Breithaupt 0 London 0 +0.0
If winner is:HomeDrawAway
Week of 9/16100.0*Average seed
London vs Durham-0.2-0.0+0.3
Hamilton vs Binbrook-0.1+0.0+0.1

What If

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

100100100100100100100100100100
If finish:Chance inPromotionChance will finish regular season at seed
TPW-D-LplayoffsPlayoff12345678910Count
595-0-0OutNo1043388083,050
574-1-0OutNo01142408326,046
564-0-1OutNo02235223398,604
553-2-0OutNo0094843531,338
543-1-1OutNo0233641,303,230
533-0-2OutNo017820796,140
2-3-0OutNo01783434,724
522-2-1OutNo79201,595,481
512-1-2OutNo39431,953,372
1-4-0OutNo3961177,160
501-3-1OutNo1964867,594
2-0-3OutNo1918796,314
491-2-2OutNo89111,595,622
0-5-0OutNo891128,641
481-1-3OutNo75251,301,853
0-4-1OutNo8119177,226
470-3-2OutNo6931434,868
1-0-4OutNo5941398,662
460-2-3OutNo5050531,559
450-1-4OutNo2971325,598
440-0-5OutNo138783,258
Total:OutNo01210761114,140,340
Points
Chance Will Make Playoffs