Determine whether the first number is divisible by the second number. Justify with the divisibility tests and not the long division.

1) Is 711,569 divisible by 2?

2) Is 6,342,567 divisible by 3?

3) Is 333,222,111 divisible by 6?

4) Is 11,340 divisible by 7?

5) Is 83,915,632 divisible by 8?

6) Is 685,476,991 divisible by 9?

7) Is 2(59) divisible by 10?

8) Is 758,580 divisible by 15?