convert

# File activesupport/lib/active_support/number_helper/number_to_human_converter.rb, line 11
      def convert # :nodoc:
        @number = Float(number)

        # for backwards compatibility with those that didn't add strip_insignificant_zeros to their locale files
        unless options.key?(:strip_insignificant_zeros)
          options[:strip_insignificant_zeros] = true
        end

        units = opts[:units]
        exponent = calculate_exponent(units)
        @number = number / (10 ** exponent)

        until (rounded_number = NumberToRoundedConverter.convert(number, options)) != NumberToRoundedConverter.convert(1000, options)
          @number = number / 1000.0
          exponent += 3
        end
        unit = determine_unit(units, exponent)
        format.gsub('%n'.freeze, rounded_number).gsub('%u'.freeze, unit).strip
      end