9 Modulo 2. Usually, when we use the word modulo, we mean the modulo operation, like, e.g. Each digit is considered independently from its neighbours.

The residues are added by finding the arithmetic sum of the numbers, and the mod is subtracted from the sum as many times as possible.

Britannica notes that in modular arithmetic, where mod is n, all the numbers (0, 1, 2, …, n − 1,) are known as residues modulo n. But 3+7=10=1 (mod 9) so the equivalent of the sum of two numbers modulo 9 is equal to the. Modular 9 arithmetic is the arithmetic of the remainders after division by 9. // when 1 is divided by 1, the remainder is zero.