We're dividing 21905 by 89 
Our goal is to divide 21905 by 89.

Moving on to step 1:
The number 89 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 89

Going ahead to step 2:
When dividing 21 by 89, we get 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Grab the next digit (9) from the dividend, add it to 21, then carry on: 219 / 89

On to step 3:
When dividing 219 by 89, we get 2 with a remainder of 41.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 178 from 219 and we're left with 41.
Fetch the next digit (0) from the dividend, attach it to 41 and continue: 410 / 89

Step 4:
89 can be fit into 410 4 times, resulting in a remainder of 54.
Put 4 as the next digit of the answer. 
Result so far: 24.0
The remainder is 54 after subtracting 356 from 410.
Grab the next digit (5) from the dividend, add it to 54, then carry on: 545 / 89

On to step 5:
The number 89 fits into 545 6 times, leaving a remainder of 11.
The number 6 becomes the next digit in our result. 
Result so far: 246.0
The remainder is 11 after subtracting 534 from 545.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 6:
The number 89 fits into 110 1 times, leaving a remainder of 21.
Write down 1 as next digit of the result. 
Result so far: 246.1
Deduct 89 from 110 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 7:
210 divided by 89 is 2 with a remainder of 32.
The next digit of our result is 2. 
Result so far: 246.12
Subtracting 178 from 210 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 8:
89 can be fit into 320 3 times, resulting in a remainder of 53.
Put 3 as the next digit of the answer. 
Result so far: 246.123
Subtracting 267 from 320 leaves us with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 9:
89 can be fit into 530 5 times, resulting in a remainder of 85.
Use 5 as the next digit of our solution. 
Result so far: 246.1235
Deduct 445 from 530 and we're left with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Step 10:
If we divide 850 by 89, we get 9 and a remainder of 49.
The next digit of our result is 9. 
Result so far: 246.12359
The remainder is 49 after subtracting 801 from 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 11:
If we divide 490 by 89, we get 5 and a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 246.123595
The remainder is 45 after subtracting 445 from 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 12:
450 divided by 89 is 5 with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 246.1235955
The remainder is 5 after subtracting 445 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

In conclusion, the division gives 246.1235955 with a balance of 5e-08.