We're dividing 21200095 by 686 
We want to divide 21200095 by 686.

Advancing to step 1:
686 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 686

Going ahead to step 2:
686 goes into 21 0 times with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Grab the next digit (2) from the dividend, add it to 21, then carry on: 212 / 686

Going ahead to step 3:
When dividing 212 by 686, we get 0 with a remainder of 212.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 212, we get 212.
Include the next digit (0) from the dividend after 212, then repeat: 2120 / 686

On to step 4:
686 can be fit into 2120 3 times, resulting in a remainder of 62.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we subtract 2058 from 2120, we get 62.
Fetch the next digit (0) from the dividend, attach it to 62 and continue: 620 / 686

Advancing to step 5:
If we divide 620 by 686, we get 0 and a remainder of 620.
The number 0 becomes the next digit in our result. 
Result so far: 30.0
Subtracting 0 from 620 leaves us with 620.
Take the next digit (0) from the dividend and append it to 620, then repeat: 6200 / 686

Advancing to step 6:
When dividing 6200 by 686, we get 9 with a remainder of 26.
Write down 9 as next digit of the result. 
Result so far: 309.0
Subtract 6174 from 6200 to get 26.
Fetch the next digit (9) from the dividend, attach it to 26 and continue: 269 / 686

Step 7:
When dividing 269 by 686, we get 0 with a remainder of 269.
Record the quotient 0 as the next digit in the result. 
Result so far: 3090.0
Subtract 0 from 269 to get 269.
Append the next digit (5) from the dividend to 269 and continue with: 2695 / 686

Moving on to step 8:
686 can be fit into 2695 3 times, resulting in a remainder of 637.
The next digit of our result is 3. 
Result so far: 30903.0
Deduct 2058 from 2695 and we're left with 637.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6370, and continue the process.

Step 9:
The number 686 fits into 6370 9 times, leaving a remainder of 196.
Use 9 as the next digit of our solution. 
Result so far: 30903.9
Deduct 6174 from 6370 and we're left with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Advancing to step 10:
The number 686 fits into 1960 2 times, leaving a remainder of 588.
Use 2 as the next digit of our solution. 
Result so far: 30903.92
Subtract 1372 from 1960 to get 588.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5880, and continue the process.

On to step 11:
686 goes into 5880 8 times with a remainder of 392.
Put 8 as the next digit of the answer. 
Result so far: 30903.928
Subtracting 5488 from 5880 leaves us with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Let's proceed to step 12:
When dividing 3920 by 686, we get 5 with a remainder of 490.
Write down 5 as next digit of the result. 
Result so far: 30903.9285
Deduct 3430 from 3920 and we're left with 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Moving on to step 13:
686 can be fit into 4900 7 times, resulting in a remainder of 98.
Put 7 as the next digit of the answer. 
Result so far: 30903.92857
Subtract 4802 from 4900 to get 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Step 14:
980 divided by 686 is 1 with a remainder of 294.
The number 1 becomes the next digit in our result. 
Result so far: 30903.928571
Deduct 686 from 980 and we're left with 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

Step 15:
686 goes into 2940 4 times with a remainder of 196.
The number 4 becomes the next digit in our result. 
Result so far: 30903.9285714
If we subtract 2744 from 2940, we get 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Advancing to step 16:
The number 686 fits into 1960 2 times, leaving a remainder of 588.
Record the quotient 2 as the next digit in the result. 
Result so far: 30903.92857142
Subtracting 1372 from 1960 leaves us with 588.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5880, and continue the process.

The quotient of the division is 30903.92857142, and the remainder is 5.88e-07.