We look at the division of 20857819 by 456 
Our goal is to divide 20857819 by 456.

Advancing to step 1:
When dividing 2 by 456, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 456

Going ahead to step 2:
If we divide 20 by 456, we get 0 and 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.
Fetch the next digit (8) from the dividend, attach it to 20 and continue: 208 / 456

Step 3:
The number 456 fits into 208 0 times, leaving a remainder of 208.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 208, we end up with 208.
Bring next digit (5) of the dividend behind the 208 and repeat the process: 2085 / 456

Going ahead to step 4:
When dividing 2085 by 456, we get 4 with a remainder of 261.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 1824 from 2085 and we're left with 261.
Append the next digit (7) from the dividend to 261 and continue with: 2617 / 456

Step 5:
456 can be fit into 2617 5 times, resulting in a remainder of 337.
The number 5 becomes the next digit in our result. 
Result so far: 45.0
Subtracting 2280 from 2617 leaves us with 337.
Fetch the next digit (8) from the dividend, attach it to 337 and continue: 3378 / 456

Going ahead to step 6:
456 goes into 3378 7 times with a remainder of 186.
The next digit of our result is 7. 
Result so far: 457.0
Deduct 3192 from 3378 and we're left with 186.
Bring next digit (1) of the dividend behind the 186 and repeat the process: 1861 / 456

Moving on to step 7:
If we divide 1861 by 456, we get 4 and a remainder of 37.
Record the quotient 4 as the next digit in the result. 
Result so far: 4574.0
If we take 1824 away from 1861, we end up with 37.
Include the next digit (9) from the dividend after 37, then repeat: 379 / 456

Moving on to step 8:
456 goes into 379 0 times with a remainder of 379.
The number 0 becomes the next digit in our result. 
Result so far: 45740.0
The remainder is 379 after subtracting 0 from 379.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3790, and continue the process.

Let's proceed to step 9:
The number 456 fits into 3790 8 times, leaving a remainder of 142.
The number 8 becomes the next digit in our result. 
Result so far: 45740.8
If we take 3648 away from 3790, we end up with 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

Moving on to step 10:
When dividing 1420 by 456, we get 3 with a remainder of 52.
The next digit of our result is 3. 
Result so far: 45740.83
Deduct 1368 from 1420 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 11:
456 goes into 520 1 times with a remainder of 64.
Write down 1 as next digit of the result. 
Result so far: 45740.831
Subtract 456 from 520 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 12:
456 can be fit into 640 1 times, resulting in a remainder of 184.
The number 1 becomes the next digit in our result. 
Result so far: 45740.8311
Subtract 456 from 640 to get 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Our division results in 45740.8311 with a remaining 0.00184.