input: Write a function `f()` that takes an argument `n` and prints the multiplication table of `n`.
  
  def f(n):
      for i in range(1, 11):
          print("{} * {} = {}".format(n, i, n*i))
  
  assert f(5) # This will print the multiplication table of 5
  assert f(7) # This will print the multiplication table of 7
output: def f(n):
      for i in range(1, 11):
          print("{} * {} = {}".format(n, i, n*i))