To get the final co-ordinates you will have to solve the puzzle Below
Windhoek S22 35.803 E17 04.653 (Not 19)
Gabarone S24 33.688 E25 54.352
Khartoum N15 34.591 E32 33.196
Cairo N30 07.212 E3126.995
Hong Kong N22 18.433 E113 55.932
Los Angeles N33 57.006 W118 24.161
Chicago N41 58.138 W87 55.836
Baltimore N39 11. 077 W76 40.880
Beijing N40 04.453 E116 34.444
Moscow N55 58.041 E37 23.254
(Windhoek x 2) - 6
Beijing + Los Angeles + Khartoum + Gabarone + 1
(Cairo x 3) + (Hong Kong x 4) - 59
(Chicago x 10) + (Los Angeles - 3)
(Khartoum x 3) + Baltimore - 6
(Beijing x Moscow) /2 - Chicaco - 2
Khartoum x 3
Beijing + Chicago
(Los Angeles x 4) + (Moscow - 4)
(Baltimore x 7) + (Gabarone - 2)
(Beijing x 3) + 1
(Hong Kong + Los Angeles) - 2
(Windhoek + Khartoum + Moscow + Gabarone) - 5
Cairo x 5
(Hong Kong x 4) + (Moscow + 2)
(Khartoum x 2) + (Beijing x 2) - (Chicago x 3)
(Windhoek x 2) - 4
(Baltimore x 6) + Gabarone
(Baltimore x 3) + Chicago
Airports