# Aliens numbering system

Number Theory Level pending

In a parallel universe, instead of using the decimal system, aliens use exactly the set of 26 letters of the English alphabet, $$\{ A, B, C, … Z\}$$. To them, A denotes 0, B denotes 1, … and Z denotes 25. All other numbers like 26, 27, ...,etc. can be represented in the aliens' numbering system.

The serial number $$CZP$$ was written on one of their spaceships.

Find the equivalent decimal value of that number.

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