Prolog: mod: Get the reminder

‘mod’ operator returns the remainder of the division operation.

1 ?- X is 10 mod 3.
X = 1.

2 ?- X is 10 mod 4.
X = 2.

3 ?- X is 10 mod 5.
X = 0.

4 ?- X is 10 mod 6.
X = 4.

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