The Roman numeral MCCCLVII corresponds to the Arabic number 1357.
MCCCLVII = 1357
Symbols are written and read from left to right, from highest to lowest.
If number MCCCLVII is within to text or sentence it should be read in its equivalent in Arabic numbers, in this case 1357.
MCCCLVI is number 1356
MCCCLVIII is number 1358
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