input: from typing import List
  
  
  def averageMatrix(matrix: List[List[float]]) -> float:
      """
      Calculate the average of the elements in a 2-dimensional array.
      >>> averageMatrix([[3, 2, 6], [8, 5, 9], [4, 7, 1]])
      4.77
      """
output:     total = 0
      count = 0
      for row in matrix:
          for element in row:
              total += element
              count += 1
      return round(total / count, 2)