844985 ÷ 20 
We want to divide 844985 by 20.

On to step 1:
When dividing 8 by 20, we get 0 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.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 20

Moving on to step 2:
When dividing 84 by 20, we get 4 with a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we take 80 away from 84, we end up with 4.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 20

Let's proceed to step 3:
When dividing 44 by 20, we get 2 with a remainder of 4.
The next digit of our result is 2. 
Result so far: 42.0
If we subtract 40 from 44, we get 4.
Grab the next digit (9) from the dividend, add it to 4, then carry on: 49 / 20

Step 4:
20 can be fit into 49 2 times, resulting in a remainder of 9.
Use 2 as the next digit of our solution. 
Result so far: 422.0
If we subtract 40 from 49, we get 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 20

Let's proceed to step 5:
The number 20 fits into 98 4 times, leaving a remainder of 18.
Use 4 as the next digit of our solution. 
Result so far: 4224.0
The remainder is 18 after subtracting 80 from 98.
Include the next digit (5) from the dividend after 18, then repeat: 185 / 20

Step 6:
185 divided by 20 is 9 with a remainder of 5.
Put 9 as the next digit of the answer. 
Result so far: 42249.0
Deduct 180 from 185 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 7:
If we divide 50 by 20, we get 2 and a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 42249.2
Subtract 40 from 50 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.

Moving on to step 8:
20 can be fit into 100 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 42249.25
Subtract 100 from 100 to 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.

Moving on 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: 42249.25
Deduct 0 from 0 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.

Moving on to step 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 42249.25
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.

The final outcome is 42249.25, with a leftover of 0.0.