HP HP-18C - Other Keyboard Arithmetic

Example: Calculating simple interest. You borrow $1,250 from a
relative,
and agree to repay the loan in a year with 7% simple interest.
How much money will you owe?
Keys: Display:
1250 G 7 00 1,250+87.50
o 1 .. 337 . 50
Other Keyboard Arithmetic
Description:
Interest on the loan is
$87.50.
You must repay this
amount at the end of one
year.
The other keyboard arithmetic keys are .~ , .em , and .0 .
They act on the number furthest to the right.
Keys:
4 .~
20 .em G
47.2
o
1.1 .0
Display:
0.25
4.47 +47.2
51.67::<:
51.67::<:1.21
62,52
5.00
36 2: Arithmetic
Description:
Calculates the reciprocal
of 4.
Calculates V2D.
Calculates 4.47 + 47.20.
Calculates 1.12.
Completes the
calculation.
Calculates
the cube root
of 125.