850944 ÷ 20 
Our goal is to divide 850944 by 20.

Going ahead to step 1:
8 divided by 20 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 20

Going ahead to step 2:
85 divided by 20 is 4 with a remainder of 5.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 80 from 85 and we're left with 5.
Take the next digit (0) from the dividend and append it to 5, then repeat: 50 / 20

Advancing to step 3:
50 divided by 20 is 2 with a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 42.0
Deduct 40 from 50 and we're left with 10.
Append the next digit (9) from the dividend to 10 and continue with: 109 / 20

Let's proceed to step 4:
The number 20 fits into 109 5 times, leaving a remainder of 9.
Record the quotient 5 as the next digit in the result. 
Result so far: 425.0
Subtracting 100 from 109 leaves us with 9.
Fetch the next digit (4) from the dividend, attach it to 9 and continue: 94 / 20

Going ahead to step 5:
20 goes into 94 4 times with a remainder of 14.
The number 4 becomes the next digit in our result. 
Result so far: 4254.0
Subtract 80 from 94 to get 14.
Fetch the next digit (4) from the dividend, attach it to 14 and continue: 144 / 20

Advancing to step 6:
20 goes into 144 7 times with a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 42547.0
If we take 140 away from 144, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 7:
When dividing 40 by 20, we get 2 with a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 42547.2
If we take 40 away from 40, 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.

Going ahead to step 8:
20 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 42547.2
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 42547.2
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 42547.2 with a remainder of 0.0.