HP 39g Master Manual page 20

You should now be back HOME, with the function
entered in the display as shown right. You
ROUND(
can also achieve the same effect by using ALPHA to
type in the word letter by letter. Some people prefer
to do it that way.
Now type in: 4+D/18,3) and press ENTER
As you can see, the effect was to round off the answer
.
of 4 666666.. to 3 decimal places.
There are shortcuts for obtaining things from the MATH
menu that are covered later (see page 47).
20