I was wondering if someone can help me illustrate to an audience what gambler's ruin is by showing it through a transition matrix.

So, for example, showing it for someone trying to get $10,000 starting at $7,000 and betting $1,000 at each betting step


P(i,N) = \frac{1-\left(\frac{q}{p}\right)^i}{1-\left(\frac{q}{p}\right)^N}

We would have our current fortune, i, being 7 and our goal, N, being 10. To make it easy, I can just make the chance of winning, p, to be \frac{1}{3}. Then we know q = \frac{2}{3}

Then what would my transition matrix and vector that I multiply it by be and how would I use matrices to show that the chance of reaching the goal is

P(7,10) = 0.12414 or roughly 12% which I figured out using the equation. I want to instead show how to give out that probability using matrices.

Thanks for your help.