Complex sentence: Pakistan's latest estimated population is 207,774,520 (excluding autonomous regions Azad Kashmir and Gilgit Baltistan) making it the world's fifth-most-populous country, just behind Indonesia and slightly ahead of Brazil.
Split into simpler sentences: Pakistan's latest estimated population is 207,774,520 (excluding autonomous regions Azad Kashmir and Gilgit Baltistan). This makes Pakistan the world's fifth-most-populous country, just behind Indonesia and slightly ahead of Brazil.