Bringing 18 on C to 225 on D, we find 12·5 under the L.H. index of C.
As in multiplication, the factors are treated as whole numbers, and the
position of the decimal point afterwards decided according to the
following rule, which, as will be seen, is the reverse of that for
multiplication:—
RULE FOR THE NUMBER OF DIGITS IN A QUOTIENT.—_If the quotient is read
with the slide projecting to the_ LEFT, _subtract the number of digits
in the divisor from those in the dividend; but if read with the slide to
the_ RIGHT, ADD _1 to this difference_.[2]
In the above example the quotient is read off with the slide to the
right, so the number of digits in the answer = 3 − 2 + 1 = 2.