16 ÷ 4 = 4 R0
No problem, we've got 16 and 4 for the division.

Step 1:
4 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 1 to get 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 4

Step 2:
4 goes into 16 4 times with a remainder of 0.
Write down 4 as next digit of of the result. 
Result so far: 4
Subtract 16 from 16 to get 0.

The final result is 4 with a remainder of 0.