Roman numerals were used primarily for counting, as the ancients had little use for, or understanding of "calculation" or arithmetic as we know it today. But; for the basic arithmetic in use in ancient times, this apparently was not that big a problem, and of course, they did not realize they had the "zero" problem in the first place. Early electronic computers used a "base-8" or "octal" (0 thru 7) number system and today's computers use "base-16" or "hexadecimal" notation (0 thru 15 or 0 thru F ) with "A thru F" representing the numbers "10 thru 15" respectively.
With some effort, you can do regular addition and subtraction and even multiplication with Roman Numerals; as both the Roman Numeral and later Arabic Number systems are both "base-10" (1 thru 9). That is, 6 4 = A(10) 7 5 = C(12) 7 8 = F(15) 8 8 = 10(16, 1 x 16 0) A(10) A(10) = 14(20, 1 x 16 4) in "Hexidecimal"; thus: decimal 32 = hex 20(2 x 16 0) and decimal 64 = hex 40(4 x 16 0) .
My mother died when my progressed MOON hit my point for Death of a Parent.
So as you can see this little known point can have a major influence on our lives. I have done extensive work and research in this and the Blue Moons.
Needless to say, I was unable to correct and change the divorce.
On my Natal Point for Marriage 20 Virgo, I saw my MOON progressing to this degree.
The rules for counting and arithmetic are the same.
You just have to remember when to "carry-over" to the next value level, 8 or 10 or 16.
Placing an "I" in front of the "V"; or placing any smaller value in front of any larger value, indicates subtraction. "IIII" is used mostly on faces of clocks and for other special uses. The subtractive principle for Roman numbers does have some restrictions You can only subtract a power of ten, and only from the next two higher "digits", where the digits are either I, V, X, L, C, D, M. Using these limits of subtraction, the Roman numerals IL for instance, for 49 and IC for 99 are not valid.
Thus, this could also be written as: 116.45 296.45 - 106.17 = 307.30 = 7 Aquarius 30 The trick with this is to remember when moving between signs, degrees, and seconds, to carry and subtract in the appropriate base for that portion of the "number." So, if you add the first two "numbers," the seconds add up to 90; you must subtract 60, leaving 30, and carry the number 1 over to the degree column.
The degrees remain in a base of 30 (30 degrees per sign), and the seconds of arc are of course 60 per degree.
Currently I have a research / teaching article I have done.
Thanks Many of the formulas are duplicated under different subjects. Some of the formulas with multiple subjects will be listed in multiple places under each individual term; others are listed with all the terms at one location. Please test both and see which you prefer for your delineations.