input: from typing import List
  
  def print_multiplication_table(num: int) -> str:
      """Print the multiplication table of a given number.
      >>> print_multiplication_table(5)
      '5 x 1 = 5'
      '5 x 2 = 10'
      '5 x 3 = 15'
      '5 x 4 = 20'
      '5 x 5 = 25'
      '5 x 6 = 30'
      '5 x 7 = 35'
      '5 x 8 = 40'
      '5 x 9 = 45'
      '5 x 10 = 50'
      """
      results = []
      for i in range(1, 11):
          results.append(f'{num} x {i} = {num*i}')
      return '\n'.join(results)
output:     results = []
      for i in range(1, 11):
          results.append(f'{num} x {i} = {num*i}')
      return '\n'.join(results)