Let's divide 20599899 by 521
We want to divide 20599899 by 521.

Going ahead to step 1:
The number 521 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 521

Let's proceed to step 2:
521 goes into 20 0 times with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 20 and we're left with 20.
Grab the next digit (5) from the dividend, add it to 20, then carry on: 205 / 521

Let's proceed to step 3:
521 goes into 205 0 times with a remainder of 205.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 205 leaves us with 205.
Take the next digit (9) from the dividend and append it to 205, then repeat: 2059 / 521

On to step 4:
The number 521 fits into 2059 3 times, leaving a remainder of 496.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 1563 away from 2059, we end up with 496.
Append the next digit (9) from the dividend to 496 and continue with: 4969 / 521

On to step 5:
521 can be fit into 4969 9 times, resulting in a remainder of 280.
The next digit of our result is 9. 
Result so far: 39.0
If we subtract 4689 from 4969, we get 280.
Take the next digit (8) from the dividend and append it to 280, then repeat: 2808 / 521

Going ahead to step 6:
If we divide 2808 by 521, we get 5 and a remainder of 203.
Record the quotient 5 as the next digit in the result. 
Result so far: 395.0
If we subtract 2605 from 2808, we get 203.
Grab the next digit (9) from the dividend, add it to 203, then carry on: 2039 / 521

Going ahead to step 7:
2039 divided by 521 is 3 with a remainder of 476.
The number 3 becomes the next digit in our result. 
Result so far: 3953.0
The remainder is 476 after subtracting 1563 from 2039.
Append the next digit (9) from the dividend to 476 and continue with: 4769 / 521

Moving on to step 8:
4769 divided by 521 is 9 with a remainder of 80.
Record the quotient 9 as the next digit in the result. 
Result so far: 39539.0
If we subtract 4689 from 4769, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 9:
521 goes into 800 1 times with a remainder of 279.
Put 1 as the next digit of the answer. 
Result so far: 39539.1
Subtract 521 from 800 to get 279.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2790, and continue the process.

Step 10:
The number 521 fits into 2790 5 times, leaving a remainder of 185.
The next digit of our result is 5. 
Result so far: 39539.15
If we subtract 2605 from 2790, 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.

Moving on to step 11:
521 can be fit into 1850 3 times, resulting in a remainder of 287.
Write down 3 as next digit of the result. 
Result so far: 39539.153
Deduct 1563 from 1850 and we're left with 287.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2870, and continue the process.

Let's proceed to step 12:
If we divide 2870 by 521, we get 5 and a remainder of 265.
The number 5 becomes the next digit in our result. 
Result so far: 39539.1535
Subtract 2605 from 2870 to get 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

On to step 13:
521 can be fit into 2650 5 times, resulting in a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 39539.15355
Subtracting 2605 from 2650 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

After the division, we end up with 39539.15355 and a remainder of 4.5e-05.