11397039 ÷ 521 
We want to divide 11397039 by 521.

Step 1:
521 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 521

Going ahead to step 2:
11 divided by 521 is 0 with a remainder of 11.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 11, we end up with 11.
Bring next digit (3) of the dividend behind the 11 and repeat the process: 113 / 521

Let's proceed to step 3:
521 goes into 113 0 times with a remainder of 113.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 113 leaves us with 113.
Take the next digit (9) from the dividend and append it to 113, then repeat: 1139 / 521

Step 4:
1139 divided by 521 is 2 with a remainder of 97.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 1042 from 1139 to get 97.
Fetch the next digit (7) from the dividend, attach it to 97 and continue: 977 / 521

Going ahead to step 5:
The number 521 fits into 977 1 times, leaving a remainder of 456.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
The remainder is 456 after subtracting 521 from 977.
Grab the next digit (0) from the dividend, add it to 456, then carry on: 4560 / 521

Let's proceed to step 6:
521 goes into 4560 8 times with a remainder of 392.
Record the quotient 8 as the next digit in the result. 
Result so far: 218.0
Deduct 4168 from 4560 and we're left with 392.
Grab the next digit (3) from the dividend, add it to 392, then carry on: 3923 / 521

Step 7:
3923 divided by 521 is 7 with a remainder of 276.
The next digit of our result is 7. 
Result so far: 2187.0
Subtracting 3647 from 3923 leaves us with 276.
Bring next digit (9) of the dividend behind the 276 and repeat the process: 2769 / 521

On to step 8:
521 can be fit into 2769 5 times, resulting in a remainder of 164.
The number 5 becomes the next digit in our result. 
Result so far: 21875.0
If we take 2605 away from 2769, we end up with 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

On to step 9:
If we divide 1640 by 521, we get 3 and a remainder of 77.
The next digit of our result is 3. 
Result so far: 21875.3
The remainder is 77 after subtracting 1563 from 1640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Let's proceed to step 10:
770 divided by 521 is 1 with a remainder of 249.
The next digit of our result is 1. 
Result so far: 21875.31
Subtracting 521 from 770 leaves us with 249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

Moving on to step 11:
521 goes into 2490 4 times with a remainder of 406.
Use 4 as the next digit of our solution. 
Result so far: 21875.314
If we take 2084 away from 2490, we end up with 406.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

Moving on to step 12:
4060 divided by 521 is 7 with a remainder of 413.
Write down 7 as next digit of the result. 
Result so far: 21875.3147
If we take 3647 away from 4060, we end up with 413.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4130, and continue the process.

Step 13:
If we divide 4130 by 521, we get 7 and a remainder of 483.
The next digit of our result is 7. 
Result so far: 21875.31477
Subtract 3647 from 4130 to get 483.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4830, and continue the process.

The final outcome is 21875.31477, with a leftover of 0.000483.