L   A   A   C   Z
76  65  65  67  90     - as ASCII values
 4   2   2   4   9     - digits added
\_/ \_/ \_/ \_/ \_/
 4   2   2   4   9     - digits added

Thus, «laacz» is 42249.

Add 1954, the year Elvis recorded his debut single, putting the end to all morality and good taste — the result is 44203.

Subtract 1964, the year Beatles with «Can't buy me love» topped the charts in a very mysterious way. The result will be 42239.

Subtract 1969, the year of Woodstock. The result will be 40270.

Add 6861 to it — this is the year Newton published wildly misunderstood «Principia», written backwards — you will get 47131.

Divide by 7, the sacred number of Illuminati — the result is 6733.

This, when read backwards, gives 3376. This is 1790 in octal, the year US patent system was established (eevil)…

Evil, QED.