48
Yes, but not evenly (16 with remainder 4).
Not evenly because it will have a remainder of 2
6 times, remainder 9
708 does not go into six evenly.
No.
No.
No.
Not evenly.
No. 81 is not evenly divisible by 16.
No. 42 is not evenly divisible by 16.
No. 25 is not evenly divisible by 16.