input: Write a python function to calculate the sum of a list.
  assert calculate_sum_of_list([1, 2, 3, 4]) == 10
  assert calculate_sum_of_list([0, -1, 1, 10]) == 10
  assert calculate_sum_of_list([5, 5, 5, 5]) == 20
output: def calculate_sum_of_list(lst):
      return sum(lst)