We look at the division of 23925571 by 521 
Our goal is to divide 23925571 by 521.

On to step 1:
The number 521 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 521

Moving on to step 2:
When dividing 23 by 521, we get 0 with a remainder of 23.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 23, we get 23.
Include the next digit (9) from the dividend after 23, then repeat: 239 / 521

Going ahead to step 3:
If we divide 239 by 521, we get 0 and a remainder of 239.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 239, we end up with 239.
Include the next digit (2) from the dividend after 239, then repeat: 2392 / 521

Advancing to step 4:
When dividing 2392 by 521, we get 4 with a remainder of 308.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we take 2084 away from 2392, we end up with 308.
Include the next digit (5) from the dividend after 308, then repeat: 3085 / 521

Moving on to step 5:
3085 divided by 521 is 5 with a remainder of 480.
The next digit of our result is 5. 
Result so far: 45.0
The remainder is 480 after subtracting 2605 from 3085.
Take the next digit (5) from the dividend and append it to 480, then repeat: 4805 / 521

Advancing to step 6:
521 goes into 4805 9 times with a remainder of 116.
Write down 9 as next digit of the result. 
Result so far: 459.0
Subtracting 4689 from 4805 leaves us with 116.
Grab the next digit (7) from the dividend, add it to 116, then carry on: 1167 / 521

Advancing to step 7:
521 goes into 1167 2 times with a remainder of 125.
The next digit of our result is 2. 
Result so far: 4592.0
The remainder is 125 after subtracting 1042 from 1167.
Grab the next digit (1) from the dividend, add it to 125, then carry on: 1251 / 521

Going ahead to step 8:
When dividing 1251 by 521, we get 2 with a remainder of 209.
Put 2 as the next digit of the answer. 
Result so far: 45922.0
Subtracting 1042 from 1251 leaves us with 209.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

On to step 9:
If we divide 2090 by 521, we get 4 and a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 45922.4
If we take 2084 away from 2090, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 10:
The number 521 fits into 60 0 times, leaving a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 45922.4
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 11:
The number 521 fits into 600 1 times, leaving a remainder of 79.
Put 1 as the next digit of the answer. 
Result so far: 45922.401
If we subtract 521 from 600, we get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Step 12:
521 goes into 790 1 times with a remainder of 269.
The next digit of our result is 1. 
Result so far: 45922.4011
If we subtract 521 from 790, we get 269.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2690, and continue the process.

The final outcome is 45922.4011, with a leftover of 0.00269.