83. It doesn't end in a 0 or 5 so it can not be divided by 5. When you add up the digits they equal 11 which means it can not be divided by 3. Lastly, it does not end in an even number so it can not be divided by a 2. (247 is not prime because it can be divided by 13.)
11.7619
Multiples of 247
30.875
96
6.175
24.7
1 13 19 247.
49.4
6.1667
14.46 = 3571 divided by 247
224.5455