40121355 divided by 551 
Our goal is to divide 40121355 by 551.

On to step 1:
551 can be fit into 4 0 times, resulting in a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 551

On to step 2:
40 divided by 551 is 0 with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 40 leaves us with 40.
Grab the next digit (1) from the dividend, add it to 40, then carry on: 401 / 551

Advancing to step 3:
When dividing 401 by 551, we get 0 with a remainder of 401.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 401 after subtracting 0 from 401.
Bring next digit (2) of the dividend behind the 401 and repeat the process: 4012 / 551

Step 4:
4012 divided by 551 is 7 with a remainder of 155.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Deduct 3857 from 4012 and we're left with 155.
Append the next digit (1) from the dividend to 155 and continue with: 1551 / 551

Step 5:
551 can be fit into 1551 2 times, resulting in a remainder of 449.
The next digit of our result is 2. 
Result so far: 72.0
If we take 1102 away from 1551, we end up with 449.
Fetch the next digit (3) from the dividend, attach it to 449 and continue: 4493 / 551

Advancing to step 6:
4493 divided by 551 is 8 with a remainder of 85.
Use 8 as the next digit of our solution. 
Result so far: 728.0
The remainder is 85 after subtracting 4408 from 4493.
Bring next digit (5) of the dividend behind the 85 and repeat the process: 855 / 551

Let's proceed to step 7:
If we divide 855 by 551, we get 1 and a remainder of 304.
Use 1 as the next digit of our solution. 
Result so far: 7281.0
Deduct 551 from 855 and we're left with 304.
Bring next digit (5) of the dividend behind the 304 and repeat the process: 3045 / 551

Step 8:
When dividing 3045 by 551, we get 5 with a remainder of 290.
The number 5 becomes the next digit in our result. 
Result so far: 72815.0
Deduct 2755 from 3045 and we're left with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Moving on to step 9:
When dividing 2900 by 551, we get 5 with a remainder of 145.
The next digit of our result is 5. 
Result so far: 72815.5
Deduct 2755 from 2900 and we're left with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Going ahead to step 10:
If we divide 1450 by 551, we get 2 and a remainder of 348.
Record the quotient 2 as the next digit in the result. 
Result so far: 72815.52
Subtracting 1102 from 1450 leaves us with 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

Step 11:
The number 551 fits into 3480 6 times, leaving a remainder of 174.
Write down 6 as next digit of the result. 
Result so far: 72815.526
If we subtract 3306 from 3480, we get 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Step 12:
When dividing 1740 by 551, we get 3 with a remainder of 87.
Use 3 as the next digit of our solution. 
Result so far: 72815.5263
If we subtract 1653 from 1740, we get 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Going ahead to step 13:
551 goes into 870 1 times with a remainder of 319.
Put 1 as the next digit of the answer. 
Result so far: 72815.52631
Deduct 551 from 870 and we're left with 319.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3190, and continue the process.

Moving on to step 14:
The number 551 fits into 3190 5 times, leaving a remainder of 435.
Use 5 as the next digit of our solution. 
Result so far: 72815.526315
Deduct 2755 from 3190 and we're left with 435.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4350, and continue the process.

Advancing to step 15:
The number 551 fits into 4350 7 times, leaving a remainder of 493.
The next digit of our result is 7. 
Result so far: 72815.5263157
The remainder is 493 after subtracting 3857 from 4350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4930, and continue the process.

Going ahead to step 16:
4930 divided by 551 is 8 with a remainder of 522.
Record the quotient 8 as the next digit in the result. 
Result so far: 72815.52631578
Subtract 4408 from 4930 to get 522.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5220, and continue the process.

The final result is 72815.52631578 with a remainder of 5.22e-07.