Data entry to profit & loss

I have a small tax accounting office and we are seeking for the freelancer who can do data entry from clients' bank statements to final in profit and loss statement.
Now I have a company need to be done above job, has about 480 transactions (debit/check) in the 12-month term.
I want you to do bookkeeping , make general ledger and profit & loss statement for the result.
How much will you charge for that? Please reply to me asap so we can start quickly.

Thank you.