Returns the <i>scale</i> of this {@code BigDecimal}. If zero
or positive, the scale is the number of digits to the right of
the decimal point. If negative, the unscaled value of the
number is multiplied by ten to the power of the negation of the
scale. For example, a scale of {@code -3} means the unscaled
value is multiplied by 1000.
Returns the <i>scale</i> of this {@code BigDecimal}. If zero or positive, the scale is the number of digits to the right of the decimal point. If negative, the unscaled value of the number is multiplied by ten to the power of the negation of the scale. For example, a scale of {@code -3} means the unscaled value is multiplied by 1000.
@return the scale of this {@code BigDecimal}.