input: Write a python function to count the number of times a number is followed by a larger number in a list.
  assert count_increasing_pairs([1, 3, 2, 4, 3, 5]) == 3
  assert count_increasing_pairs([10, 9, 8, 7]) == 0
  assert count_increasing_pairs([5, 6, 7, 8, 9]) == 4
output: def count_increasing_pairs(lst):
      count = 0
      for i in range(len(lst) - 1):
          if lst[i] < lst[i + 1]:
              count += 1
      return count