<h3>
Congrats: I declare you as winner of this quiz, because all your numbers are correct. :)
</h3>

Concerning your maths I still have a question though: why did you write the gross winning of the bet on team B would be 2880 euro in case of a draw? They are half the stake (1920 euro / 2) multiplied by 2.00 = 1920 euro! The <em>net winnings</em> are 1920 euro minus the stake = <strong>960 euro</strong>.
In case of a win of team B you win gross: 1920 euro * 2.00 = 3840 euro as you wrote. The <strong>net winnings</strong> are 3840 euro - 1920 euro = <strong>1920 euro</strong>.

-> Thus the difference of the net winnings which you must balance is 1920 euro - 960 euro = 960 euro. (<em>Not</em> 3840 euro - 2880 euro. :-)  ). Fortunately for you the difference is the same even if calculated in a different way so you got the correct stake for the bet on the draw, too. :)