The Roman numeral CCCXCVII corresponds to the Arabic number 397.
CCCXCVII = 397
Symbols are written and read from left to right, from highest to lowest.
If number CCCXCVII is within to text or sentence it should be read in its equivalent in Arabic numbers, in this case 397.
CCCXCVI is number 396
CCCXCVIII is number 398
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