We're dividing 844123 by 20 
Let's see how many times 20 fits into 844123.

On to step 1:
20 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 20

Step 2:
20 goes into 84 4 times with a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 80 from 84 leaves us with 4.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 20

Advancing to step 3:
If we divide 44 by 20, we get 2 and a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 42.0
Deduct 40 from 44 and we're left with 4.
Bring next digit (1) of the dividend behind the 4 and repeat the process: 41 / 20

Going ahead to step 4:
41 divided by 20 is 2 with a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 422.0
Deduct 40 from 41 and we're left with 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 20

Let's proceed to step 5:
12 divided by 20 is 0 with a remainder of 12.
The next digit of our result is 0. 
Result so far: 4220.0
If we subtract 0 from 12, we get 12.
Fetch the next digit (3) from the dividend, attach it to 12 and continue: 123 / 20

Step 6:
123 divided by 20 is 6 with a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 42206.0
Deduct 120 from 123 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 7:
20 goes into 30 1 times with a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 42206.1
Subtract 20 from 30 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
20 can be fit into 100 5 times, resulting in a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 42206.15
Deduct 100 from 100 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
0 divided by 20 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 42206.15
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 42206.15
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 42206.15 with a remaining 0.0.