answers = [e1, e2, e3, e4, e5, e6, e7]
mapper = {
  'Less than 250': 0,
  '250 to 499': 250,
  '500 to 999': 500,
  '1000 to 4999': 1000,
  '5000 to 19,999': 5000,
  '20,000 or more': 20000,
  'Not Provided': 0,
  '0': 0,
  '1-9': 1,
  '10-49': 10,
  '50-249': 50,
  '250-999': 250,
  '250+': 250,
  '1000+': 1000,
  'Less than 1000': 0,
  '1001-5000': 1001,
  '5001-10000': 5001,
  'More than 10000': 10000,
  }

isNumber = (n) ->
  return not isNaN(parseFloat(n)) and isFinite(n)

mapAnswer = (answer) ->
  if answer of mapper
    return mapper[answer]
  if isNumber answer
    return answer
  return 0 

mappedAnswers = answers.map (answer) -> mapAnswer(answer)

mappedAnswers.reduce (a,b) -> Math.max a, b