splitting account (with child account) balances

[ruppie30 at yahoo.com]

hi,

i am a long time gnucash user.  i would like to take a few specific accounts and split the balance of them (simple divide by 2 and round up to the nearest penny).  then i'd like to add and/or subtract other account balances and see the result.  for all of the accounts are parents with child accounts, i need to perform the above math on the parent + all child accounts.

is this best done in a report?  can it be done any other way inside gnucash?

thanks,
chris