simple SQL question

I have a column with the following values (example below)

5673
4731
4462
5422
756
3060

I want the column to display the numbers as follows:

56.73
47.31
44.62
54.22
7.56
30.60

I have been playing around with string functions but cannot seem to 
figure out a quick solution. Does anyone have any suggestions?

Please let me know.

Thanks.