28 ÷ 2 = 14 R0
Let's divide 28 by 2.

Step 1:
2 goes into 2 1 times with a remainder of 0.
Write down 1 as next digit of of the result. 
Result so far: 1
Subtract 2 from 2 to get 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 2

Step 2:
2 goes into 8 4 times with a remainder of 0.
Write down 4 as next digit of of the result. 
Result so far: 14
Subtract 8 from 8 to get 0.

The final result is 14 with a remainder of 0.