To find the remainder of \(66\) divided by \(5\), you can use the division method.
When dividing \(66\) by \(5\):
- \(5\) goes into \(66\) a total of \(13\) times, since \(5 \times 13 = 65\).
- Subtract \(65\) from \(66\): \[ 66 - 65 = 1 \]
Thus, the remainder when \(66\) is divided by \(5\) is \(1\).
So, \(66 \mod 5 = 1\).