To solve this equation, we can follow the order of operations (PEMDAS):

First, calculate the expression within the parentheses:
(27 150 : 3 • 80 - 6 389 • 26)
= (9050 • 80 - 101014)
= (724000 - 101014)
= 622986

Next, calculate the entire expression:
z > (622986) : 7 + 604 • 508

Continue solving the expression:
z > 622986 : 7 + 307232

z > 622986 + 307232
z > 930218

Therefore, the solution to the equation is z > 930218.