In today's notation they represent 390
That is not a proper Roman Numeral
It is: DCCXXX = 730
It is: XVI = 16
It is the equivalent of 313 = CCCXIII
li or LI = 51
20
1993
That is not a proper Roman Numeral
In roman numrals it means 2011
It is: DCCXXX = 730
It is: XVI = 16
li or LI = 51
It is the equivalent of 313 = CCCXIII
390
390
CCCXC
16