To calculate the break-even multiplier when opening slot bonuses, divide the total amount deposited by the total value of the bonuses you've received. For example, if you deposit $50,000 and receive bonuses worth a total of $50,000, your break-even multiplier would be 1x, as you would need to win back exactly what you deposited. If the bonuses are worth more, the multiplier would be less than 1x, and if they're worth less, the multiplier would be greater than 1x.