old_contents: """
  algorithms from section 2.5, DMA 5th
      by Yue Wang 30.11.2014
  """
  
  
  def multiply(lhs, rhs):
      rows = len(lhs)
      cols = len(rhs[0])
      common_range = len(lhs[0])
      product = [[0 for _ in range(cols)] for _ in range(rows)]   # List Comprehensions
      for r in range(rows):
          for c in range(cols):
              for k in range(common_range):
                  product[r][c] += lhs[r][k] * rhs[k][c]
      return product
new_contents: """
  Implementing algorithms from section 2.5, DMA 5th
      by Yue Wang 30.11.2014
  """
  
  
  def multiply(lhs, rhs):
      rows = len(lhs)
      cols = len(rhs[0])
      common_range = len(lhs[0])
      product = [[0 for _ in range(cols)] for _ in range(rows)]   # List Comprehensions
      for r in range(rows):
          for c in range(cols):
              for com in range(common_range):
                  product[r][c] += lhs[r][com] * rhs[com][c]
      return product
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