Let's divide 551986 by 16
We're looking to find how many times 16 goes into 551986.

Advancing to step 1:
When dividing 5 by 16, we get 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 16

Let's proceed to step 2:
When dividing 55 by 16, we get 3 with a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 48 from 55 and we're left with 7.
Bring next digit (1) of the dividend behind the 7 and repeat the process: 71 / 16

On to step 3:
The number 16 fits into 71 4 times, leaving a remainder of 7.
Write down 4 as next digit of the result. 
Result so far: 34.0
The remainder is 7 after subtracting 64 from 71.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 16

On to step 4:
16 goes into 79 4 times with a remainder of 15.
The number 4 becomes the next digit in our result. 
Result so far: 344.0
Subtracting 64 from 79 leaves us with 15.
Append the next digit (8) from the dividend to 15 and continue with: 158 / 16

Going ahead to step 5:
16 goes into 158 9 times with a remainder of 14.
The number 9 becomes the next digit in our result. 
Result so far: 3449.0
Deduct 144 from 158 and we're left with 14.
Include the next digit (6) from the dividend after 14, then repeat: 146 / 16

Let's proceed to step 6:
16 can be fit into 146 9 times, resulting in a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 34499.0
If we subtract 144 from 146, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 7:
If we divide 20 by 16, we get 1 and a remainder of 4.
Write down 1 as next digit of the result. 
Result so far: 34499.1
If we take 16 away from 20, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 8:
16 can be fit into 40 2 times, resulting in a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 34499.12
If we take 32 away from 40, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 9:
80 divided by 16 is 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 34499.125
Deduct 80 from 80 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
If we divide 0 by 16, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 34499.125
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 11:
If we divide 0 by 16, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 34499.125
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 34499.125 with a remainder of 0.0.