...
arbitrary usage: Bob's usage .083 + (parent's usage .1667 - Bob's usage .083) * .5: .0415125
Fairshare formula: 2^-(.0415/.2): .866
...
...
arbitrary usage: Bob's usage .083 + (parent's usage .1667 - Bob's usage .083) * .5: .0415125
Fairshare formula: 2^-(.0415/.2): .866
...