def to_base(other_base)
      if other_base == @radix
        dup
      else
        normalization = exact? ? :exact : :approximate
        Numeral.from_quotient to_quotient, base: other_base, normalize: normalization
      end
    end
def to_base(other_base)
      if other_base == @radix
        dup
      else
        normalization = exact? ? :exact : :approximate
        Numeral.from_quotient to_quotient, base: other_base, normalize: normalization
      end
    end
Convert a Numeral to a different base