Elementary arithmetic, with brief notices of its history... by Robert Potts.

7
manner analogous to that in Sect. VI. Art. 9, regard being had to the
units of magnitude.1
If the divisor can be exactly divided into small factors, the quotient
of a sum of money may be found by dividing the given sum successively by the factors of the divisor.2
IMPERIAL WEIGHTS.
5. By the Act of Parliament which defined the standards of weights
and measures, it was enacted, that "a cubic inch of distilled water,
weighed in air by brass weights, at the temperature of 62 degrees of
Fahrenheit's thermometer, the barometer being at 30 inches, is equal
to 252-458 grains."
Of these grains thus determined the pound Avoirdupois consists of
7,000.
AvoInDUPOIS 3WEIGHT.
16 dralms are equal to 1 ounce
16 ounces,, 1 pound
28 pounds,, 1 quarter
4 quarters,, 1 hundredweight
20 hundredweights,, 1 ton.
Avoirdupois weight is the general weight employed in weighing all
substances except gold, silver, and precious stones.
I Ex. Divide ~12244 3s. 6d. by 2136.
~ s. d.
2136)12244 3 6(~5 14s. 7c quotient.
10680
1564
20
2136)31283(14s.
2136
9923
8544
1379
12
2136)16554(7d.
14952
1602
4
2136)6408(3q.
6408
0
Ex. Divide ~275 8s. by 48.
Here 48=6 X 8.
~ s. d.
6)275 3 0
8)45 ~7 2
~5 14 7* quotient.