How are these numbers calculated?

Big Games

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

Week of 3/13100.0*Chance in playoffs100.0*Average seed
Melbourne 24 Carlton 40 +20.5
+0.7
Brisbane 14 Collingwood 43 -7.8
-0.1
Western Bulldogs 51 Fremantle 66 -0.7
-0.1
St Kilda 42 Richmond 3 -0.1
If winner is:HomeTieAway
Week of 3/20100.0*Chance in playoffs100.0*Average seed
Carlton vs West Coast+11.3+10.7-11.4
+0.5+0.2-0.5
Collingwood vs St Kilda-6.0+5.1+5.9
-0.2+0.2+0.2
Fremantle vs Melbourne+5.9+5.1-6.0
+0.0+0.1-0.0

What If

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

100100100100100100100
If finish:Chance inChance will finish regular season at seedWooden
TPW-L-Tplayoffs1234567SpoonCount
282-0-0In928No7,810,475,501
261-0-1In5050No156,842,134
241-1-096.9%961273No15,609,597,269
0-0-293.957376No788,754
220-1-193.656386No156,811,099
200-2-050.194150No7,810,522,471
Total:86.1%27352414No31,545,037,228
Games Above .500
Chance Will Make Playoffs