Well, I agree that 6.2% of $7,655.18 is $474.62116.
But I do have to wonder if there is a rounding error here...if you round $474.62 up to $475, then 475 divided by 7655 is 6.025049 (blah blah), which is slightly larger than 6.2%.
It should not affect your return, because the "excess" is about 2.4 cents, which will probably be reduced to zero.
Thanks for the numbers; it will help looking into this, but, as I said, it shouldn't affect your return.