Determine whether or not the first number is divisible by the second number

Question

10,199; 3

Answer 1

A number is divisible by 3 if the sum of its digits is divisible by three.

For example, 375 is divisible by three because 3+7+5 is 15, which is divisible by 3.

1+0 = 1, which isn't divisible by 3

1+9+9 = 19, same as above