We look at the division of 12261383 by 721 
We want to figure out the number of times 12261383 can be divided by 721.

Advancing to step 1:
721 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 721

Going ahead to step 2:
If we divide 12 by 721, we get 0 and a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Append the next digit (2) from the dividend to 12 and continue with: 122 / 721

On to step 3:
122 divided by 721 is 0 with a remainder of 122.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 122 and we're left with 122.
Append the next digit (6) from the dividend to 122 and continue with: 1226 / 721

Step 4:
721 goes into 1226 1 times with a remainder of 505.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 721 from 1226 and we're left with 505.
Grab the next digit (1) from the dividend, add it to 505, then carry on: 5051 / 721

Step 5:
The number 721 fits into 5051 7 times, leaving a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 17.0
The remainder is 4 after subtracting 5047 from 5051.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 721

Advancing to step 6:
When dividing 43 by 721, we get 0 with a remainder of 43.
Write down 0 as next digit of the result. 
Result so far: 170.0
If we take 0 away from 43, we end up with 43.
Grab the next digit (8) from the dividend, add it to 43, then carry on: 438 / 721

Moving on to step 7:
438 divided by 721 is 0 with a remainder of 438.
The next digit of our result is 0. 
Result so far: 1700.0
If we subtract 0 from 438, we get 438.
Append the next digit (3) from the dividend to 438 and continue with: 4383 / 721

Let's proceed to step 8:
4383 divided by 721 is 6 with a remainder of 57.
Put 6 as the next digit of the answer. 
Result so far: 17006.0
If we take 4326 away from 4383, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 9:
721 goes into 570 0 times with a remainder of 570.
Put 0 as the next digit of the answer. 
Result so far: 17006.0
If we subtract 0 from 570, we get 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

On to step 10:
The number 721 fits into 5700 7 times, leaving a remainder of 653.
The number 7 becomes the next digit in our result. 
Result so far: 17006.07
The remainder is 653 after subtracting 5047 from 5700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6530, and continue the process.

Moving on to step 11:
721 goes into 6530 9 times with a remainder of 41.
Use 9 as the next digit of our solution. 
Result so far: 17006.079
Subtracting 6489 from 6530 leaves us with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Advancing to step 12:
The number 721 fits into 410 0 times, leaving a remainder of 410.
Use 0 as the next digit of our solution. 
Result so far: 17006.079
If we take 0 away from 410, we end up with 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Going ahead to step 13:
When dividing 4100 by 721, we get 5 with a remainder of 495.
The next digit of our result is 5. 
Result so far: 17006.07905
Subtracting 3605 from 4100 leaves us with 495.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4950, and continue the process.

Advancing to step 14:
If we divide 4950 by 721, we get 6 and a remainder of 624.
Put 6 as the next digit of the answer. 
Result so far: 17006.079056
Deduct 4326 from 4950 and we're left with 624.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

Advancing to step 15:
721 can be fit into 6240 8 times, resulting in a remainder of 472.
Write down 8 as next digit of the result. 
Result so far: 17006.0790568
If we take 5768 away from 6240, we end up with 472.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4720, and continue the process.

Let's proceed to step 16:
When dividing 4720 by 721, we get 6 with a remainder of 394.
Put 6 as the next digit of the answer. 
Result so far: 17006.07905686
If we take 4326 away from 4720, we end up with 394.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3940, and continue the process.

The final result is 17006.07905686 with a remainder of 3.94e-07.