[Haskell-beginners] How to save a bracket in this case?

[Vikraman]

On Mon, Dec 02, 2013 at 03:53:22PM +0800, yi lu wrote:
> Hi,
> 
> I want to calculate
> *(81/10)^2*.
> 
> However, after I typed *81/10*, I remembered to add a bracket to surround
> *81/10*. Is there one way to do some trick to save this bracket?
> 
> Actually I can *Ctrl+A* to move to the first character of this line. I want
> the other solution.
> 

(1) 81/10 * 81/10
(2) Enter 81/10
    The result gets saved in it
    Now, it^2

-- 
Vikraman