HP -11C Owner's Handbook Manual page 14

24 Section 1: Getting Started
Example: Solve (6 + 7) X(9 — 3).
First solve for the intermediate result of (6+7):
Keystrokes Display
6 6
6.0000
7 7
13.0000 (6+7)
Keystrokes Display
9 9
9.0000
3 3
Keystroke Display
Fa] 78.0000
(6+ 7) X(9-3)=78
Remember:
~ww
Section 1: Getting Started 25
« Intermediate results are stored on a last-in, first-out basis.
Now try these problems, Work through them as you would with
pencil and paper. Don't be concerned about intermediate
answers—they are handled automatically by your HP-11C.
(16 X 38)-(13x 11) = 465.0000
(27+63)+(33X9) = 0.3030
(/(16.38 X 0.55) +.05 = 60.0300
4x(17—12)+(10—5) = 4.0000