divisibility rule for 8

Rule:
A number is divisible by 8,if the last three digits of the number is divisible by 8.
Example 1:
Is 567816 divisible by 8?
Solution:
The last three digits in the number 567816 is 816.
816 is divisible by 8 since 816/8=102.
According to the rule given above,the number 567816 is divisible by 8.
Example 2:
Is 782343 divisible by 8?
Solution:
The last three digits in the number 782343 is 343.
343 is not divisible by 8 since 343/8 leaves 7 as remainder.
As per the rule given above,the number 782343 is not divisible by 8.