How are these numbers calculated?

Big Games

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

Week of 7/1100.0*Chance in playoffs100.0*Average seed
Dayton 2 Erie 1 +50.6
+0.9
Fort Pitt 2 Dayton 0 -20.8
-0.5
Cleveland 2 Syracuse 0 -7.4
-0.2
Cleveland 2 Lancers 0 -4.1
-0.0
Week of 7/9100.0*Chance in playoffs100.0*Average seed
Buffalo 3 Cleveland 1 In
+0.4
Erie 1 Cleveland 0 -2.1
-0.0
Week of 7/15100.0*Chance in playoffs100.0*Average seed
Lancers 3 Erie 1 +0.2
If winner is:HomeDrawAway
Erie vs Syracuse-0.4-0.4+0.6

What If

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

100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-Lplayoffs1234567Count
210-0-0In3763103,908,898,470
Total:In3763103,908,898,470
Points
Chance Will Make Playoffs