Although the others answers do provide a solution, I think the a great solution would be to use SteemWorld.org, if you go to https://steemworld.org/sm-goldies you will be able to see a wide range of different statistics and gain access to wide range of useful tools for you account. In relation to the question you asked, you can go down to the transfer search tool as seen in the image below:
Once you have chosen your search parameters you can click search and then be presented with your results similar to the table below:
You can then download your results into a CSV and open in it excel and then you can do any calculations you wish using the raw data :)
The tool you are likely looking for is this: https://steemyy.com/transfer-viewer/
Steemyy's Transfer Viewer allows you to filter out wallet transactions and allows you to only show incoming and/or outgoing transactions from accounts you explicitly specified.
Although it doesn't have an auto-sum feature but a simple copy paste to excel would probably do the trick since the incoming/outgoing transactions are neatly laid out. :)
of course. but you must be using steem-plus service on your chrome or opera mini. once you have the steem-plus extension on your browsers, then you can click on the links section provided by the steem-plus services and select either steemBD.com or accusta account statistics or the steem ocean. the links will automatically load and you can execute the activities you wanna perform.
i hope this will help you. thanks for reading