input: Write a function to generate an even number between 10 and 200 that is divisible by 5.
  assert generate_even_number() != None
  assert generate_even_number() % 2 == 0
  assert generate_even_number() % 5 == 0
  assert 10 <= generate_even_number() <= 200
output: import random
  
  def generate_even_number():
      while True:
          num = random.randint(10, 200)
          if num % 2 == 0 and num % 5 == 0:
              return num