We look at the division of 36721431 by 551 
We want to divide 36721431 by 551.

Step 1:
551 goes into 3 0 times with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Include the next digit (6) from the dividend after 3, then repeat: 36 / 551

Step 2:
When dividing 36 by 551, we get 0 with a remainder of 36.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 36, we get 36.
Bring next digit (7) of the dividend behind the 36 and repeat the process: 367 / 551

Let's proceed to step 3:
551 goes into 367 0 times with a remainder of 367.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 367 and we're left with 367.
Append the next digit (2) from the dividend to 367 and continue with: 3672 / 551

Moving on to step 4:
The number 551 fits into 3672 6 times, leaving a remainder of 366.
The next digit of our result is 6. 
Result so far: 6.0
Subtracting 3306 from 3672 leaves us with 366.
Grab the next digit (1) from the dividend, add it to 366, then carry on: 3661 / 551

Step 5:
551 can be fit into 3661 6 times, resulting in a remainder of 355.
Write down 6 as next digit of the result. 
Result so far: 66.0
Subtracting 3306 from 3661 leaves us with 355.
Include the next digit (4) from the dividend after 355, then repeat: 3554 / 551

Step 6:
551 goes into 3554 6 times with a remainder of 248.
The next digit of our result is 6. 
Result so far: 666.0
Subtract 3306 from 3554 to get 248.
Append the next digit (3) from the dividend to 248 and continue with: 2483 / 551

Going ahead to step 7:
551 goes into 2483 4 times with a remainder of 279.
The number 4 becomes the next digit in our result. 
Result so far: 6664.0
Deduct 2204 from 2483 and we're left with 279.
Bring next digit (1) of the dividend behind the 279 and repeat the process: 2791 / 551

On to step 8:
If we divide 2791 by 551, we get 5 and a remainder of 36.
Write down 5 as next digit of the result. 
Result so far: 66645.0
If we subtract 2755 from 2791, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 9:
If we divide 360 by 551, we get 0 and a remainder of 360.
Use 0 as the next digit of our solution. 
Result so far: 66645.0
The remainder is 360 after subtracting 0 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Going ahead to step 10:
If we divide 3600 by 551, we get 6 and a remainder of 294.
Use 6 as the next digit of our solution. 
Result so far: 66645.06
If we subtract 3306 from 3600, we get 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

Advancing to step 11:
551 can be fit into 2940 5 times, resulting in a remainder of 185.
Write down 5 as next digit of the result. 
Result so far: 66645.065
If we subtract 2755 from 2940, we get 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Advancing to step 12:
If we divide 1850 by 551, we get 3 and a remainder of 197.
Record the quotient 3 as the next digit in the result. 
Result so far: 66645.0653
If we take 1653 away from 1850, we end up with 197.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1970, and continue the process.

Moving on to step 13:
The number 551 fits into 1970 3 times, leaving a remainder of 317.
Use 3 as the next digit of our solution. 
Result so far: 66645.06533
If we subtract 1653 from 1970, we get 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

After the division, we end up with 66645.06533 and a remainder of 0.000317.