551566 ÷ 3 
Our goal is to divide 551566 by 3.

Going ahead to step 1:
If we divide 5 by 3, we get 1 and a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 3 from 5 to get 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 3

Advancing to step 2:
If we divide 25 by 3, we get 8 and a remainder of 1.
The next digit of our result is 8. 
Result so far: 18.0
Subtracting 24 from 25 leaves us with 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 3

Step 3:
When dividing 11 by 3, we get 3 with a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 183.0
If we subtract 9 from 11, we get 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 3

Moving on to step 4:
If we divide 25 by 3, we get 8 and a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 1838.0
If we take 24 away from 25, we end up with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 3

On to step 5:
3 can be fit into 16 5 times, resulting in a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 18385.0
If we subtract 15 from 16, we get 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 3

Going ahead to step 6:
When dividing 16 by 3, we get 5 with a remainder of 1.
The next digit of our result is 5. 
Result so far: 183855.0
Deduct 15 from 16 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
3 can be fit into 10 3 times, resulting in a remainder of 1.
The next digit of our result is 3. 
Result so far: 183855.3
If we take 9 away from 10, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 8:
3 goes into 10 3 times with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 183855.33
The remainder is 1 after subtracting 9 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The quotient of the division is 183855.33, and the remainder is 0.001.