Regarding this as 2·85 × 10^{−6} ÷ 1·97 × 10^{−4} we divide 2·85 by
1·97 and obtain 1·446. Dividing the powers of 10 we have 10^{−6} ÷
10^{−4} = 10^{−2}, so the decimal point is to be moved two places to
the left and the answer is read as 0·01446.
Another method of dividing deserves mention as of special service when
dividing a number of quantities by a _constant divisor_:—Set the index
of C to the divisor on D and over any dividend on D, read the quotient
on C.
For the division of a _constant dividend_ by a variable divisor, set the
cursor to the dividend on D and bring the divisor on C successively to
the cursor, reading the corresponding quotients on D under the index of
C. Another method which avoids moving the slide is explained in the
section on “Multiplication and Division with the Slide Inverted.”