I am using (n - r + 1 + nh) * 10 formula for game

(n - r + 1 + nh) * 10 for tourney formula

(n * 10) * if(nr > 0, 7.5, 10) for overall

Each player is allowed for one rebuy before round four. There is a 25% penalty for rebuying how do I put that in formula and where do I enter the formula in the game tab, tourney tab, or overall tab. We have played four games this year. The above formula are working great for the points system. I just can not get the 25% penalty formula right.