Let's divide 20858802 by 808
We want to divide 20858802 by 808.

Advancing to step 1:
808 goes into 2 0 times 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.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 808

Step 2:
The number 808 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 20 to get 20.
Bring next digit (8) of the dividend behind the 20 and repeat the process: 208 / 808

Advancing to step 3:
808 goes into 208 0 times with a remainder of 208.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 208 and we're left with 208.
Append the next digit (5) from the dividend to 208 and continue with: 2085 / 808

Going ahead to step 4:
808 goes into 2085 2 times with a remainder of 469.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 469 after subtracting 1616 from 2085.
Grab the next digit (8) from the dividend, add it to 469, then carry on: 4698 / 808

Step 5:
808 goes into 4698 5 times with a remainder of 658.
Write down 5 as next digit of the result. 
Result so far: 25.0
Deduct 4040 from 4698 and we're left with 658.
Append the next digit (8) from the dividend to 658 and continue with: 6588 / 808

Moving on to step 6:
If we divide 6588 by 808, we get 8 and a remainder of 124.
Put 8 as the next digit of the answer. 
Result so far: 258.0
If we take 6464 away from 6588, we end up with 124.
Bring next digit (0) of the dividend behind the 124 and repeat the process: 1240 / 808

Going ahead to step 7:
808 goes into 1240 1 times with a remainder of 432.
Write down 1 as next digit of the result. 
Result so far: 2581.0
If we take 808 away from 1240, we end up with 432.
Grab the next digit (2) from the dividend, add it to 432, then carry on: 4322 / 808

Going ahead to step 8:
808 goes into 4322 5 times with a remainder of 282.
Put 5 as the next digit of the answer. 
Result so far: 25815.0
If we take 4040 away from 4322, we end up with 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

Moving on to step 9:
The number 808 fits into 2820 3 times, leaving a remainder of 396.
Record the quotient 3 as the next digit in the result. 
Result so far: 25815.3
Deduct 2424 from 2820 and we're left with 396.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Moving on to step 10:
The number 808 fits into 3960 4 times, leaving a remainder of 728.
Put 4 as the next digit of the answer. 
Result so far: 25815.34
Deduct 3232 from 3960 and we're left with 728.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7280, and continue the process.

Advancing to step 11:
808 can be fit into 7280 9 times, resulting in a remainder of 8.
Write down 9 as next digit of the result. 
Result so far: 25815.349
The remainder is 8 after subtracting 7272 from 7280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 12:
808 can be fit into 80 0 times, resulting in a remainder of 80.
The next digit of our result is 0. 
Result so far: 25815.349
If we subtract 0 from 80, 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.

Step 13:
808 can be fit into 800 0 times, resulting in a remainder of 800.
Put 0 as the next digit of the answer. 
Result so far: 25815.349
If we subtract 0 from 800, we get 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

After the division, we end up with 25815.349 and a remainder of 0.0008.