Look For Identical Strings And Add Cell Values Beside Each

Hi guys, I am looking for a macro to do the following:

Go down a column and identify all accounts that are identical, then add up the values that are 5 columns to the right of each account and paste them on another sheet along with the account code (there are 12 values for each account to be added with the other identical accounts).

I've attached a spreadsheet, because I understnad this might be kind of confusing. In essence:

1. Go down column C

2. Look for accounts that are identical

3. Add up the values for each account in columns G:R

4. Copy and paste the added values to another sheet along with columns C:F for each account to identify it.