This is a bit of a tangent, but this is how I would actually solve the problem in Ruby: #!/usr/bin/env ruby require "csv" puts CSV.foreach(ARGV[0], hea

This is a bit of a tangent, but this is how I would actually solve the problem in Ruby: #!/usr/bin/env ruby require "csv" puts CSV.foreach(ARGV[0], headers: true).sum { _1[1].to_f }.round(2)