We're dividing 20615808 by 851 
Let's see how many times 851 fits into 20615808.

Going ahead to step 1:
When dividing 2 by 851, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Grab the next digit (0) from the dividend, add it to 2, then carry on: 20 / 851

Going ahead to step 2:
851 can be fit into 20 0 times, resulting in a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 20, we get 20.
Append the next digit (6) from the dividend to 20 and continue with: 206 / 851

Moving on to step 3:
If we divide 206 by 851, we get 0 and a remainder of 206.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 206, we get 206.
Grab the next digit (1) from the dividend, add it to 206, then carry on: 2061 / 851

Moving on to step 4:
851 goes into 2061 2 times with a remainder of 359.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 1702 from 2061 to get 359.
Include the next digit (5) from the dividend after 359, then repeat: 3595 / 851

Advancing to step 5:
The number 851 fits into 3595 4 times, leaving a remainder of 191.
Put 4 as the next digit of the answer. 
Result so far: 24.0
If we subtract 3404 from 3595, we get 191.
Take the next digit (8) from the dividend and append it to 191, then repeat: 1918 / 851

Step 6:
The number 851 fits into 1918 2 times, leaving a remainder of 216.
Record the quotient 2 as the next digit in the result. 
Result so far: 242.0
Subtract 1702 from 1918 to get 216.
Bring next digit (0) of the dividend behind the 216 and repeat the process: 2160 / 851

Step 7:
The number 851 fits into 2160 2 times, leaving a remainder of 458.
Put 2 as the next digit of the answer. 
Result so far: 2422.0
Subtract 1702 from 2160 to get 458.
Take the next digit (8) from the dividend and append it to 458, then repeat: 4588 / 851

Going ahead to step 8:
851 goes into 4588 5 times with a remainder of 333.
Record the quotient 5 as the next digit in the result. 
Result so far: 24225.0
Subtract 4255 from 4588 to get 333.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3330, and continue the process.

Advancing to step 9:
3330 divided by 851 is 3 with a remainder of 777.
The next digit of our result is 3. 
Result so far: 24225.3
Subtract 2553 from 3330 to get 777.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7770, and continue the process.

On to step 10:
If we divide 7770 by 851, we get 9 and a remainder of 111.
Record the quotient 9 as the next digit in the result. 
Result so far: 24225.39
The remainder is 111 after subtracting 7659 from 7770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1110, and continue the process.

Advancing to step 11:
If we divide 1110 by 851, we get 1 and a remainder of 259.
Write down 1 as next digit of the result. 
Result so far: 24225.391
Subtracting 851 from 1110 leaves us with 259.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2590, and continue the process.

Going ahead to step 12:
851 can be fit into 2590 3 times, resulting in a remainder of 37.
Record the quotient 3 as the next digit in the result. 
Result so far: 24225.3913
Subtracting 2553 from 2590 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 13:
When dividing 370 by 851, we get 0 with a remainder of 370.
The number 0 becomes the next digit in our result. 
Result so far: 24225.3913
Subtract 0 from 370 to get 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

On to step 14:
When dividing 3700 by 851, we get 4 with a remainder of 296.
Write down 4 as next digit of the result. 
Result so far: 24225.391304
Deduct 3404 from 3700 and we're left with 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Moving on to step 15:
851 can be fit into 2960 3 times, resulting in a remainder of 407.
Put 3 as the next digit of the answer. 
Result so far: 24225.3913043
If we subtract 2553 from 2960, we get 407.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4070, and continue the process.

Advancing to step 16:
When dividing 4070 by 851, we get 4 with a remainder of 666.
Write down 4 as next digit of the result. 
Result so far: 24225.39130434
If we take 3404 away from 4070, we end up with 666.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6660, and continue the process.

After the division, we end up with 24225.39130434 and a remainder of 6.66e-07.