21905635 ÷ 680 
Our goal is to divide 21905635 by 680.

On to step 1:
If we divide 2 by 680, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 680

Step 2:
If we divide 21 by 680, we get 0 and a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Fetch the next digit (9) from the dividend, attach it to 21 and continue: 219 / 680

Advancing to step 3:
If we divide 219 by 680, we get 0 and a remainder of 219.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 219 after subtracting 0 from 219.
Include the next digit (0) from the dividend after 219, then repeat: 2190 / 680

Let's proceed to step 4:
680 can be fit into 2190 3 times, resulting in a remainder of 150.
Write down 3 as next digit of the result. 
Result so far: 3.0
The remainder is 150 after subtracting 2040 from 2190.
Append the next digit (5) from the dividend to 150 and continue with: 1505 / 680

Advancing to step 5:
The number 680 fits into 1505 2 times, leaving a remainder of 145.
Write down 2 as next digit of the result. 
Result so far: 32.0
If we subtract 1360 from 1505, we get 145.
Bring next digit (6) of the dividend behind the 145 and repeat the process: 1456 / 680

On to step 6:
680 can be fit into 1456 2 times, resulting in a remainder of 96.
The next digit of our result is 2. 
Result so far: 322.0
Deduct 1360 from 1456 and we're left with 96.
Grab the next digit (3) from the dividend, add it to 96, then carry on: 963 / 680

Going ahead to step 7:
963 divided by 680 is 1 with a remainder of 283.
The number 1 becomes the next digit in our result. 
Result so far: 3221.0
The remainder is 283 after subtracting 680 from 963.
Append the next digit (5) from the dividend to 283 and continue with: 2835 / 680

Let's proceed to step 8:
2835 divided by 680 is 4 with a remainder of 115.
Write down 4 as next digit of the result. 
Result so far: 32214.0
Subtracting 2720 from 2835 leaves us with 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

On to step 9:
680 goes into 1150 1 times with a remainder of 470.
Put 1 as the next digit of the answer. 
Result so far: 32214.1
If we subtract 680 from 1150, we get 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Let's proceed to step 10:
The number 680 fits into 4700 6 times, leaving a remainder of 620.
The number 6 becomes the next digit in our result. 
Result so far: 32214.16
Subtracting 4080 from 4700 leaves us with 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

Step 11:
The number 680 fits into 6200 9 times, leaving a remainder of 80.
Record the quotient 9 as the next digit in the result. 
Result so far: 32214.169
The remainder is 80 after subtracting 6120 from 6200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 12:
If we divide 800 by 680, we get 1 and a remainder of 120.
Record the quotient 1 as the next digit in the result. 
Result so far: 32214.1691
Deduct 680 from 800 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

On to step 13:
1200 divided by 680 is 1 with a remainder of 520.
Write down 1 as next digit of the result. 
Result so far: 32214.16911
If we take 680 away from 1200, we end up with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

The final result is 32214.16911 with a remainder of 0.00052.