This is some work on your end, but may be beneficial beyond what jsp can manage. Use Excel. You want accounting tools? Use the biggest one in the world. You'll have infinite history to scroll through and its already in a calculator for quickly summing over various periods and games. And that's not even going from 101 to 102 where you might use pivot tables to sort the data or vlookups to see how much you've sent/received from who.

Good tip, thanks!

I'll try that out!
I think, that it takes much more time than a personal gold comment though.

Yes from me

Thanks!