Hi Nikita,
Can you clarify your use case and the impact? Regrettably, the issue with computers using binary but humans decimal causes some rounding at some level of precision pretty much no matter what.
So if you are storing a value using a decimal representation, and it is stored slightly differently due to finite precision and binary conversion, but trying to do an exact match, I do not know if that will ever work, regardless of adding a couple digits more precision.
Let us know your use case and we can consider approaches, though.