The Roman numeral CMLXXVII corresponds to the Arabic number 977.
CMLXXVII = 977
Symbols are written and read from left to right, from highest to lowest.
If number CMLXXVII is within to text or sentence it should be read in its equivalent in Arabic numbers, in this case 977.
CMLXXVI is number 976
CMLXXVIII is number 978
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