Ruby : to_eng Integer class extension

Here's the "English Number" method implemented in a more useful form; as an extension to the Integer class. It now works with negative numbers to. The usage is simple.

puts 0.to_eng(0) # arg is 0 for British, 1 for American
puts 12.to_eng(1)
puts -54.to_eng(1)
puts (10**600).to_eng(0)

# extend the Integer class with a "to english" method

class Integer

def to_eng scale

  number = self.abs

  if number == 0
    return 'zero'
  end

  # ... code removed see previous post

      if write > 0
      
        exps = write.to_eng(scale)

        # ...
        
      end
# ...

  if self<0
    numString = "Minus " + numString
  end

  #  Now we just return "numString"...
  numString

end

end