code: def get_span_char_width(span, column_widths):
      
  
      start_column = span[0][1]
      column_count = get_span_column_count(span)
      total_width = 0
  
      for i in range(start_column, start_column + column_count):
          total_width += column_widths[i]
  
      total_width += column_count - 1
  
      return total_width
docs: Sum the widths of the columns that make up the span, plus the extra.
  
      Parameters
      ----------
      span : list of lists of int
          list of [row, column] pairs that make up the span
      column_widths : list of int
          The widths of the columns that make up the table
  
      Returns
      -------
      total_width : int
          The total width of the span