We're dividing 210985 by 20 
Let's see how many times 20 fits into 210985.

Going ahead to step 1:
When dividing 2 by 20, we get 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 20

Let's proceed to step 2:
If we divide 21 by 20, we get 1 and a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 20 from 21, we get 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 20

Moving on to step 3:
20 can be fit into 10 0 times, resulting in a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtracting 0 from 10 leaves us with 10.
Append the next digit (9) from the dividend to 10 and continue with: 109 / 20

On to step 4:
The number 20 fits into 109 5 times, leaving a remainder of 9.
Write down 5 as next digit of the result. 
Result so far: 105.0
The remainder is 9 after subtracting 100 from 109.
Fetch the next digit (8) from the dividend, attach it to 9 and continue: 98 / 20

Moving on to step 5:
98 divided by 20 is 4 with a remainder of 18.
The next digit of our result is 4. 
Result so far: 1054.0
Subtracting 80 from 98 leaves us with 18.
Fetch the next digit (5) from the dividend, attach it to 18 and continue: 185 / 20

Step 6:
185 divided by 20 is 9 with a remainder of 5.
Record the quotient 9 as the next digit in the result. 
Result so far: 10549.0
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.

On to step 7:
50 divided by 20 is 2 with a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 10549.2
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.

Step 8:
20 goes into 100 5 times with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 10549.25
If we subtract 100 from 100, 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.

Moving on 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: 10549.25
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to 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: 10549.25
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.

The final outcome is 10549.25, with a leftover of 0.0.