Appending digits after decimal

[saivig68]

I have a following digits and would like to use a regex to convert to the following , can some one point me in the right direction.

Current State	Desired State
12.02	12.02999
1.564	1.56499
0.3	0.3999
0.5896	0.58969
0.99999	0.99999

[RodL · Accepted solution]

Attached is an example that uses both RegEx and a Formula tool expression to pad out 9's in the decimal.

I believe this works even with whole numbers (no decimal).