input: Write a python function to print the sum, mean, and standard deviation of a list of numbers.
  assert print_stats([1, 2, 3, 4, 5]) == "Sum = 15\nMean = 3.0\nStandard Deviation = 1.4142135623730951\n"
  assert print_stats([10, 20, 30, 40, 50]) == "Sum = 150\nMean = 30.0\nStandard Deviation = 14.142135623730951\n"
  assert print_stats([5, 10, 15, 20, 25]) == "Sum = 75\nMean = 15.0\nStandard Deviation = 7.0710678118654755\n"
output: import math
  
  def print_stats(numbers):
      n = len(numbers)
      sum_numbers = sum(numbers)
      mean = sum_numbers / n
      variance = sum((x - mean) ** 2 for x in numbers) / n
      std_deviation = math.sqrt(variance)
      
      return f"Sum = {sum_numbers}\nMean = {mean}\nStandard Deviation = {std_deviation}\n"