615 / 5

1. Divide 6 by 5, which is 1 with a remainder of 1.

2. Bring down the 1 to make 11. Divide 11 by 5, which is 2 with a remainder of 1.

3. Bring down the 5 to make 15. Divide 15 by 5, which is 3.

Answer: 123