Step by step solution :
Step-1 :
Set up the problem with long division bracket. Put dividend inside bracket and divisor on outside left.

3	5

Step-2 :
3 goes into 5 (1-times). Put a 1 in the next place of quotient and multiply 3 by 1 to get 3.
Subtract 3 from 5 to get remainder `(5-3=2)`.

	1
3	5
−	3	=3 × 1
	2