def is_literal_number?(value)
      value.is_a?(Literal) &&
        value.value.is_a?((Sass::Script::Value::Number)) &&
        !value.value.original.nil?
    end
def is_literal_number?(value)
      value.is_a?(Literal) &&
        value.value.is_a?((Sass::Script::Value::Number)) &&
        !value.value.original.nil?
    end
Returns whether a value is a number literal that shouldn't be divided.