In the view that נ"ב is 45,128 "years" plus 7,000 - 128, we live in a Universe that is currently 13755317923 years (45128*304805 + 73440 + 4443) old.
In the view that נ"ב is the latter part of 45,128 "years", as explained in the previous post, the two culminating in 6129, we live in a Universe that is currently 13755249683 years (45128*304805 - 357) old.