rowhousepd .
See what daviddem posted ?
http://www.flopturnriver.com/pokerfo...ll-173396.html
Spoon wrote that ^^^^^
I reckon , It took spoon 2-3 hours to compile and proof that masterpiece.
If you spent a shorter while working through it , until you understood it , you would be amazed how simple the calculation is.
Give it a go .....