text: def large_int_format(x):
  	num = round_downer(x)
  	if 1000000000 <= num:
  		return str(num // 1000000000) + 'b'
  	elif 1000000 <= num < 1000000000:
  		return str(num // 1000000) + 'mm'
  	elif 1000 <= num < 1000000:
  		return str(num // 1000) + 'k'
  	else:
  		return str(num)
  
  
  def round_downer(x):
  	power_of_ten = 10 ** (len(str(int(x))) - 1)
  	num = power_of_ten * (x // power_of_ten)
  	return num
  