We look at the division of 20814858 by 396 
We're looking to find how many times 396 goes into 20814858.

Let's proceed to step 1:
396 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 396

Moving on to step 2:
20 divided by 396 is 0 with 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 (8) from the dividend to 20 and continue with: 208 / 396

Going ahead to step 3:
If we divide 208 by 396, we get 0 and a remainder of 208.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 208, we get 208.
Append the next digit (1) from the dividend to 208 and continue with: 2081 / 396

Advancing to step 4:
If we divide 2081 by 396, we get 5 and a remainder of 101.
The next digit of our result is 5. 
Result so far: 5.0
If we subtract 1980 from 2081, we get 101.
Bring next digit (4) of the dividend behind the 101 and repeat the process: 1014 / 396

Going ahead to step 5:
If we divide 1014 by 396, we get 2 and a remainder of 222.
Record the quotient 2 as the next digit in the result. 
Result so far: 52.0
The remainder is 222 after subtracting 792 from 1014.
Take the next digit (8) from the dividend and append it to 222, then repeat: 2228 / 396

Moving on to step 6:
When dividing 2228 by 396, we get 5 with a remainder of 248.
Write down 5 as next digit of the result. 
Result so far: 525.0
The remainder is 248 after subtracting 1980 from 2228.
Include the next digit (5) from the dividend after 248, then repeat: 2485 / 396

Step 7:
2485 divided by 396 is 6 with a remainder of 109.
Put 6 as the next digit of the answer. 
Result so far: 5256.0
Subtract 2376 from 2485 to get 109.
Bring next digit (8) of the dividend behind the 109 and repeat the process: 1098 / 396

Going ahead to step 8:
When dividing 1098 by 396, we get 2 with a remainder of 306.
Write down 2 as next digit of the result. 
Result so far: 52562.0
If we take 792 away from 1098, we end up with 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

Moving on to step 9:
If we divide 3060 by 396, we get 7 and a remainder of 288.
Write down 7 as next digit of the result. 
Result so far: 52562.7
Subtracting 2772 from 3060 leaves us with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Let's proceed to step 10:
The number 396 fits into 2880 7 times, leaving a remainder of 108.
Record the quotient 7 as the next digit in the result. 
Result so far: 52562.77
If we subtract 2772 from 2880, we get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

The final result is 52562.77 with a remainder of 0.108.