fun Long?.convertZatoshiToZec(scale: Int = ZEC_FORMATTER.maximumFractionDigits): BigDecimal
Convert a Zatoshi value into ZEC, right-padded to the given number of fraction digits, represented as a BigDecimal in order to preserve rounding that minimizes cumulative error when applied repeatedly over a sequence of calculations. Start with Zatoshi -> End with ZEC.
scale - the number of digits to the right of the decimal place. Right-padding will be added,
if necessary.
Return
this Long Zatoshi value represented as ZEC using a BigDecimal with the given scale,
rounded accurately out to 128 digits.