['1 - Tokyo, Japan: 37,393,129. ... ', '2 - Delhi, India: 30,290,936. ... ', '3 - Shanghai, China: 27,058,479. ... ', '4 - San Paolo, Brazil: 22,043,028. ... ', '5 - Mexico City, Mexico: 21,782,378. ... ', '6 - Dhaka, Bangladesh: 21,005,860.']