You don't.
You don't store the same data in more than one field in a table.
You can display it that way in your forms, reports, or queries, but you
would not save it. what happens if someone changes an amount? Then the
'words' are wrong if it is saved.
Both of your questions have been answered many times over in these
newsgroups. Please take a moment to go search previous posts on these
topics instead of posting a new thread.
Google.com can be used to read any previous post by clicking the "groups"
link and starting your search string with...
microsoft.public.access
followed by yout serach string such as "storing calculated values" or
"converting numbers to text".