Please answer the question. I find a lot of the time the answer is wrong.. please use the proper formula. its Ordinary Simple Annuities

Robert opened an RRSP deposit account on December 1,2008 , with a deposit of $2200. He added $2200 on January 1,2010 , and $2200 on January 1,2012 . How much is in his account on December 1,2016 , if the deposit earns 6.7% p.a. compounded monthly? The amount in the account is $. (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.)