Dubai is a crossroads of the world, where travelers from every continent pass through its gleaming terminals. Whether you're here for a grand adventure or simply between flights, this cache offers a brief puzzle challenge during your stopover. (Time required: 15-20 minutes, there and back)

Welcome to Dubai International (DXB) Terminal 3.
The puzzle
Find the IATA code for Dubai International Airport. Convert the letters to numbers using: A=1, B=2, … the sum of all digits is "Z". "X" is the number corresponding to the second letter of the code.
Start format: N(Header) + (X-Z)*X+144, E(Header) - {[(Z+X)*Z/X]*2-135}
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