Texas Instruments TI-5015 Operating Manual page 21

The reciprocal sequence is such that you can also use it to divide a printed
result into another number.
Example: ... 6 _
-=
L333333333
1.5 x 3
Enter Press Print
1.5 iXJ
3
-
-
=]
6
:~
1.5x
3.=
4.5
4.5-:-
4.5=
1.
6.~
1.333333333
Comments
3 x 5 evaluated
4. 5 stored as constant
4.5 .,. 4.5 evaluated
Replace i with 6
The repetitive use of the reciprocal key sequence to obtain the original entry
may result in an error in the right-most digit. This is due to the normal
rounding process in the calculator.
Example:
-1
~ .0222222222
45
- - . 1 .. --
-=
45.00000005
.0222222222
Enter
45
Press
::::::1
[='l
19
Print
45.-:-
45.~
1.
1 .....
. 0222222222
.0222222222 ..,..
. 0222222222
~
1.
1.=
45.00000005