defmodule Alcool do
  @spec units(Float.t(), Float.t()) :: Float.t()
  def units(cl, degrees) do
    kg(cl, degrees) * 100
  end

  def grams(cl, degrees) do
    kg(cl, degrees) * 1000
  end

  def kg(cl, degrees) do
    cl / 100 * 0.8 * (degrees / 100)
  end
end