We look at the division of 901982 by 20 
We want to divide 901982 by 20.

Let's proceed to step 1:
When dividing 9 by 20, we get 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 20

Going ahead to step 2:
If we divide 90 by 20, we get 4 and a remainder of 10.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 80 from 90 and we're left with 10.
Grab the next digit (1) from the dividend, add it to 10, then carry on: 101 / 20

On to step 3:
20 can be fit into 101 5 times, resulting in a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 45.0
If we subtract 100 from 101, we get 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 20

Advancing to step 4:
When dividing 19 by 20, we get 0 with a remainder of 19.
Record the quotient 0 as the next digit in the result. 
Result so far: 450.0
Subtracting 0 from 19 leaves us with 19.
Bring next digit (8) of the dividend behind the 19 and repeat the process: 198 / 20

Moving on to step 5:
The number 20 fits into 198 9 times, leaving a remainder of 18.
Use 9 as the next digit of our solution. 
Result so far: 4509.0
Deduct 180 from 198 and we're left with 18.
Append the next digit (2) from the dividend to 18 and continue with: 182 / 20

Moving on to step 6:
182 divided by 20 is 9 with a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 45099.0
Subtract 180 from 182 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 7:
The number 20 fits into 20 1 times, leaving a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 45099.1
Deduct 20 from 20 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.

Going ahead to step 8:
20 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 45099.1
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.

Advancing to step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 45099.1
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.

In conclusion, the division gives 45099.1 with a balance of 0.0.