input: Write a python function to multiply the values in a list such that even numbers are doubled and odd numbers are quadrupled.
  assert multiply_values([2, 5, 6, 8]) == [4, 20, 12, 16]
  assert multiply_values([1, 3, 4, 7]) == [4, 12, 8, 28]
  assert multiply_values([10, 15, 20, 25]) == [20, 60, 40, 100]
output: def multiply_values(lst):
      return [x * 2 if x % 2 == 0 else x * 4 for x in lst]