During the Roman era 48 was probably written out as IIL (-2+50=48)
But under today's notation of Roman numerals 48 is XLVIII
11l
here you go.In roman`s numberals its looks like this X-10 and XI-11
CLXXXIX
1736
1607
40032
MCMLXXXXII
It is: 5 = V
2000 = MM
11
50
20 = XX
2101 = MMCI