def addDot(num):
	"""Formats the number into a string and adds a '.' for every thousand (eg. 3000 -> 3.000)
	Parameters
	----------
	num : int
		integer number to format

	Returns
	-------
	number : str
		a string representing that number with added dots for every thousand
	"""
	return '{0:,}'.format(int(num)).replace(',','.')