input: Write a python function to calculate the sum of even numbers and the average of odd numbers in a list.
  assert calculate_even_sum_and_odd_avg([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == (30, 3.75)
  assert calculate_even_sum_and_odd_avg([10, 20, 45, 67, 84, 93]) == (114, 42.0)
  assert calculate_even_sum_and_odd_avg([5, 7, 9, 8, 6, 4, 3]) == (18, 6.0)
output: def calculate_even_sum_and_odd_avg(lst):
      even_sum = sum(num for num in lst if num % 2 == 0)
      odd_numbers = [num for num in lst if num % 2 != 0]
      odd_avg = sum(odd_numbers) / len(odd_numbers) if odd_numbers else 0
      return even_sum, odd_avg