Question about winning streaks

Is there a simple way to estimate the probability of consecutive winning trips to the casino using basic strategy playing a game with an EV of approximately -0.75%, without taking bankroll or length of time played into consideration. I am just looking for an estimate and nothing exact. If bank is an issue, for this example just use a bet of 1 unit and a bank of 40 or 80 units units.

Thanks in advance for any info or insight here.

Dave