input: def find_numbers_divisible_by(m: int, n: int, divisor: int) -> List[int]:
      """ Find all numbers divisible by a given divisor within a specified range [m, n].
      >>> find_numbers_divisible_by(1, 10, 2)
      [2, 4, 6, 8, 10]
      >>> find_numbers_divisible_by(36, 74, 6)
      [36, 42, 48, 54, 60, 66, 72]
      """
output:     result = []
      for num in range(m, n + 1):
          if num % divisor == 0:
              result.append(num)
      return result