Flow chart madness

x - y = z [all values inside x to y (including x and y itself) is logical equivalent to z] [for example what is the logical equivalence of 1 (since 1 is inside 0 to 2 and all values between 0 and 2 including 0 and 2 itself is 0 because 0-2 = 0 so 0 is the logical equivalence to 1]

Following the logical sequence. what is the difference of the logical equivalence of 999,999 and the logical equivalence of 999,999,999?

0-2 = 0

3-6 = 1

7-11 = 2

12-17 = 3

18-24 = 4

25-32 = 5

33-41 = 6

42-51 = 7

52-62 = 8

63-74 = 9

75-87 = 10

(and so on).
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