why would it be minus 13 units ...
you only risk 10 units ...so when you WIN at -130 you only gain 7.79 units.
IT'S A FLAT WAGER...
He plays to win $1000 so it's -13.00 on a -130 bet for 10 units.
There are quite a few errors up there but I see what you did. A lot of people risk bet instead of betting to win that amount. Thanks for taking the time. :0008