M represents 1000 and C represents 100. This would translate to 1674.
1000
XLII = 42
VII is seven=7.
45 because -10+55 = XLV
If you mean: XCVIII then they stand for 98
In Roman numerals, it means XLVIII. In decimal notation, it means 48.
In today's notation of Roman numerals it represents 1674
It is: 132 = CXXXII in Roman numerals
294
50
MDCCXC
L