How are these numbers calculated?

Big Games

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

Week of 4/28100.0*Chance in playoffs100.0*Home Quarterfinal100.0*Average seed
Highlanders 57 Stormers 14 -0.1
If winner is:HomeDrawAway
Reds vs Waratahs-8.6-2.4+8.7
-8.4-2.5+8.5
-1.5-0.4+1.5
Brumbies vs Blues-2.8-0.4+2.8
-2.9-0.3+2.9
-0.2-0.1+0.2
Force vs Lions-1.3-0.8+1.4
-1.4-0.8+1.4
-0.2-0.1+0.2
Kings vs Rebels+1.3+1.0-1.3
+1.3+1.0-1.4
+0.1+0.1-0.1
Jaguares vs Sharks+0.0+0.1-0.0
Chiefs vs Sunwolves+0.1-0.0-0.1
Cheetahs vs Crusaders-0.1-0.1+0.1
If winner is:HomeDrawAway
Week of 5/5100.0*Chance in playoffs100.0*Home Quarterfinal100.0*Average seed
Waratahs vs Blues+7.1-2.1-7.1
+6.9-2.2-6.9
+1.4-0.4-1.3
Chiefs vs Reds+1.3+0.3-1.4
+1.4+0.3-1.4
+0.2+0.0-0.2
Rebels vs Lions-1.3+1.0+1.3
-1.4+1.0+1.3
-0.2+0.1+0.2
Sharks vs Force+1.3-0.8-1.3
+1.4-0.8-1.4
+0.2-0.1-0.2
Cheetahs vs Highlanders+0.1+0.0-0.1
-0.1-0.1+0.1
Jaguares vs Sunwolves-0.1+0.0+0.1
Bulls vs Crusaders-0.1-0.1+0.1

What If

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

100100100100100100100100100100100100100100100100100100
If finish:Chance inHomeChance will finish regular season at seed
TPW-OTLDplayoffsQuarterfinal123456789101112131415161718Count
367-00099.6%97.5%16235001100034,336,765
346-00198.093.003162002320007,510,231
326-01087.984.00255900384000235,695,950
5-00281.174.902253016126100718,608
305-01169.166.5056200211136100045,048,331
4-00364.864.15590191692038,179
285-02046.145.9343005192181000707,170,187
4-01233.032.823100622261120003,588,914
3-00435.935.623307212510201,188
264-02121.521.5021000520291851000112,667,325
3-01319.319.3019041830216100152,418
2-0059.19.19273223922
244-0308.28.2080011027321740001,178,541,136
3-0223.63.60401725342271007,177,980
2-0144.04.04182434217103,611
223-0311.31.3100041733301320150,228,190
2-0231.01.010031532311530228,935
1-015OutNo419233319252
203-0400.20.200017223526811,178,508,288
2-0320.00.0000051834301117,176,471
1-0240.00.00041834311113,707
182-0410.00.00000214353612112,663,667
1-0330.00.0000212343813152,677
0-025OutNo41922411527
162-0500.00.0000016274522707,152,746
1-042OutNo00052446253,588,371
0-034OutNo0052547231,254
141-051OutNo0006355945,063,998
0-043OutNo005346138,359
121-060OutNo00022968235,684,582
0-052OutNo0022870717,172
100-061OutNo008927,515,619
80-070OutNo079334,352,572
Total:15.2%15.0%021300001469111112121184,815,727,532
Points
Chance Will Make Playoffs