whether or ot the first number divisible by the second.

There are rules of divisibility. If a number is exactly divisible by 2 and exactly divisible by 3, is it exactly divisible by 6? If you know the rules, you will have your answer.
 
rules of divisibility by 2 --- the number in the unit position must be an even number (that is the number must be like xx0 or xx2 or xyz4...etc.)

rules of divisibility by 3 --- The number is divisible by 3, if and only if, the sum of all the digits is divisible by 3. For example:

321 is divisible by 3 - because 3+2+1 = 6 is divisible by 3


323 is not divisible by 3 - because 3+2+3 = 8 is not divisible by 3
 
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