Natural Keyes & Calls & Gates

[corporalchiron]

Each of the Three Great Planes has Seven Subdivisions

each of these (3 x 7) 21 subdivisions has, in turn, Seven subdivisions

21 x 7 = 147

7 subdivisions
x
7 subdivisions
49
the 49 Gates opened by the 49 Natural Keyes & Calls (48 in practice: one is not to be opened_

49 per Great Plane x 3 = 147

(minus) - 3 (each planes 49 gates)
yields
144 gates