Expanding Our Gematria Horizons | Understanding Octal Numbers Lesson +Freemason, Masonic & Worshipful Master

Octal, 8

Each multiple of 8 is worth 10.

1 = 1
2 = 2
3 = 3
4 = 4
5 = 5
6 = 6
7 = 7
8 = 10 (This is where it gets different)
9 = 11
10 = 12
11 = 13
12 = 14
13 = 15
14 = 16
15 = 17
16 = 20
17 = 21
18 = 22
19 = 23
20 = 24
21 = 25
22 = 26
23 = 27
Now at 24 it is 30, not 28.... because this is how Octal works.  (Base 8, Base Eight)
We'll now just count by the multiples of 8, you know how to calculate the digits in between.
24 = 30
32 = 40
40 = 50
48 = 60
56 = 70
64 = 100 (In Base 8, 8 is 10) (So here it is 10x10)
72 = 110
80 = 120
88 = 130
96 = 140
104 = 150
112 = 160
120 = 170
128 = 200 (20x10)
136 = 210
144 = 220
152 = 230
160 = 240
168 = 250
176 = 260
184 = 270
192 = 300 (30x10)
200 = 310
208 = 320
*216 = 330
224 = 340
232 = 350
240 = 360
248 = 370
256 = 400 (40x10)
264 = 410
272 = 420
280 = 430
288 = 440
296 = 450
304 = 460
312 = 470
320 = 500 (50x10)

With this knowledge we can better appreciate things such as this:
Notice 147 in Octal is 223.

Notice above on our chart we made, 144 = 220

From 144 to 147, is 3 more.  From 220 to 223 is 3 more.