Using each of digits 1, 3, 4, 8 exactly once, find the two numbers that are divisible by 4 and not divisible by 8 or 16?

Question

How many different positive numbers (integers) can you make using each of the digits 1, 2, 3, 4, once only, and a take away sign?

Example 31-24, or 413-2

Answer 1

1348 and 3148