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.