input: Write a python function to calculate mean, median, and mode of a list of numbers.
  assert calculate_mean_median_mode([1, 2, 3, 4, 5, 5, 6, 7, 8, 9]) == (5.0, 5, 5)
  assert calculate_mean_median_mode([10, 20, 20, 30, 40]) == (24.0, 20, 20)
  assert calculate_mean_median_mode([1, 2, 3, 4, 4, 4, 5, 6, 7, 8, 9, 9, 9]) == (5.0, 5, 4)
output: def calculate_mean_median_mode(numbers):
      from collections import Counter
      import statistics
  
      mean = sum(numbers) / len(numbers)
      median = statistics.median(numbers)
      mode = Counter(numbers).most_common(1)[0][0]
      
      return (mean, median, mode)