HP 35s Scientific Calculator - Manual (Page 57)

RPN: The Automatic Memory Stack 2-11
Example:
Two close stellar neighbors of Earth are Rigel Centaurus (4.3 light–years away) and
Sirius (8.7 light–years away). Use c, the speed of light (9.5
× 10 15 meters per year)
to convert the distances from the Earth to these stars into meters:
To Rigel Centaurus: 4.3 yr Ч (9.5 Ч 10 15 m/yr).
To Sirius: 8.7 yr Ч (9.5 Ч 10 15 m/yr).
Keys: Display: Description:

 
Enters first number.

 

Intermediate result.
 

Brings back display from before
 .
 
Final result.