denominator -> Integer
分母を返します。常に正の整数を返します。
例 Rational(7).denominator # => 1 Rational(7, 1).denominator # => 1 Rational(9, -4).denominator # => 4 Rational(-2, -10).denominator # => 5
Rational(7).denominator # => 1 Rational(7, 1).denominator # => 1 Rational(9, -4).denominator # => 4 Rational(-2, -10).denominator # => 5
[SEE_ALSO] Rational#numerator