Facit C1-13 - Page 20

Addition
qnd
Subtroction
of nurnbers
hoving
10-15
digits
Exartple:
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:
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Set up
as many of
the first
figures
ol the number
as the
setting register
can hold (9
figr:res).
The two
last figures,
therefore,
have
to be left
out. Depress
rhc
lclt-hand
.hiIt
key
(Q
rwice
(a"
meny
timcs
as
there
arc remaining
figures in
the numbers).
Nlakc
a forward
turn.
The
product
regisrer
shows
Clear
the sctting rcgister.
remainirrg
figurcs,
82, and
The
product
registcr
now
Now sct up
the two
makc
a forward
turn.
shows
the completc
Clear
thc setting register.
Set
up
the first
9 figures
in
thc next number.
Prcss
thc left-hand
shift kcy
(p
thrce
times and
makc a forward
rurn.
The
producr
regisrer now
shows
Clear the
setting register.
Set up the
thrce remaining
figurcs, 163,
and malcc:
forward
turn.
The
product
register
now shows
the total
sum of
thc two added nurabers
Clcar
rhc setting register
again.
Sct up the first
9
figures
of thc ncxt
number.
Press left-Land
shifr
kcy
(p
once ald n:ke
a backward
turn
(sub-
traction).
Clc.rr
L\e
,errint
r.
ci(ter.
.ct
up thc
,emainin;
figure
3, and nTake
one morc
backward
rurn.
Thc answcr
to the entire
calculation
is now
ready
and appears
in
thc
prodr:ct
rcgister
.
16