function getMinimumEligibleReferralsFactorCalculation(uint256 totalTicketsSoldPrevDraw)
    internal
    view
    virtual
    returns (uint256 minimumEligible)
{
    if (totalTicketsSoldPrevDraw < 10_000) {
        // 1%
        return totalTicketsSoldPrevDraw.getPercentage(PercentageMath.ONE_PERCENT);
    }
    if (totalTicketsSoldPrevDraw < 100_000) {
        // 0.75%
        return totalTicketsSoldPrevDraw.getPercentage(PercentageMath.ONE_PERCENT * 75 / 100);
    }
    if (totalTicketsSoldPrevDraw < 1_000_000) {
        // 0.5%
        return totalTicketsSoldPrevDraw.getPercentage(PercentageMath.ONE_PERCENT * 50 / 100);
    }
    return 5000;
}
