Radalt, it is a calculation. It is not a guaranteed figure for payment. It starts as an estimated monthly payment (which seems to be far too high). As this is supposed to be "tax free" they "augment" their figure in a way that nobody understands (but which seriously over-estimates the actual realities / figure - ESPECIALLY for F/Os - due to different tax bands which they "forget" about).
There are thus a minimum of three seperate scams here. Bottom line, to compare a Ryanair salary with others you need to either "gross down" the Ryanair figures for comparision or to "gross up" the figures used by other companies to compare "like with like". This changes the "Ryanair reality" somewhat!
Welcome to the world of Ryanair. Is there really anyone left who has not been well and truely warned about this kind of Ryanair game?