If it is a reserve (i.e. an estimation), it should be whole number. $491 is more of an exact number. The report should be compiled a few days ago. So, they worked out the "5% over Federal Reserve" already. IMO.
It was said (I think) during Mnuchin Calabria, 5 billion set aside for legal payments. That right there is a full on admittance there is wrong being dealt against shareholders. IMHO