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*Wooden Spoon100.0*Average seed
Brisbane 14 Collingwood 43 -0.4
+0.4
West Coast 8 Gold Coast 33 Out
+18.3
-0.3
Melbourne 24 Carlton 40 -0.1
Western Bulldogs 51 Fremantle 66 -10.6
+0.2
St Kilda 42 Richmond 3 +7.3
-0.1
If winner is:HomeTieAway
Week of 3/20100.0*Chance in playoffs100.0*Wooden Spoon100.0*Average seed
Carlton vs West Coast+21.0-18.4-20.8
-0.3+0.3+0.3
North Melbourne vs Western Bulldogs-14.9-13.2+15.0
+0.2+0.2-0.2
Collingwood vs St Kilda-3.9-1.2+3.9
+0.1+0.1-0.1

What If

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

100100100100100100100
If finish:Chance inChance will finish regular season at seedWooden
TPW-L-Tplayoffs1234567SpoonCount
122-0-0Out44451010.3%7,810,426,751
101-0-1Out19621918.7156,811,783
81-1-0Out1287170.615,609,703,982
0-0-2Out257574.7788,765
60-1-1Out257575.2156,817,274
40-2-0Out19999.27,810,488,673
Total:Out12266262.5%31,545,037,228
Games Above .500
Chance Will Make Playoffs