Guys & ladies

But what i would like is does anyone know the formula that the calculation uses
Example i lay £150 0-0 box Odds 16.0 = £2250 liability


When I check say any other away win at 8.2
I get new Liability of -£663.22 on both score lines


and stake = £50.83 on 0-0 from £150.

Does anyone know the formula (via the odds) how BA bookmaking does this basically I want to transfer that screen as a spreadsheet or better still is there a spreadsheet available
that mimics calculations on Bookmaking correct Score
Thanks in advance
Alpha