We look at the division of 21236310 by 691 
We're looking to find how many times 691 goes into 21236310.

On to step 1:
If we divide 2 by 691, we get 0 and a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 691

Step 2:
When dividing 21 by 691, we get 0 with a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Take the next digit (2) from the dividend and append it to 21, then repeat: 212 / 691

Going ahead to step 3:
691 can be fit into 212 0 times, resulting in a remainder of 212.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 212 leaves us with 212.
Fetch the next digit (3) from the dividend, attach it to 212 and continue: 2123 / 691

Advancing to step 4:
691 goes into 2123 3 times with a remainder of 50.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtracting 2073 from 2123 leaves us with 50.
Include the next digit (6) from the dividend after 50, then repeat: 506 / 691

Going ahead to step 5:
691 can be fit into 506 0 times, resulting in a remainder of 506.
Write down 0 as next digit of the result. 
Result so far: 30.0
The remainder is 506 after subtracting 0 from 506.
Grab the next digit (3) from the dividend, add it to 506, then carry on: 5063 / 691

Step 6:
When dividing 5063 by 691, we get 7 with a remainder of 226.
Use 7 as the next digit of our solution. 
Result so far: 307.0
If we subtract 4837 from 5063, we get 226.
Fetch the next digit (1) from the dividend, attach it to 226 and continue: 2261 / 691

Step 7:
691 can be fit into 2261 3 times, resulting in a remainder of 188.
The number 3 becomes the next digit in our result. 
Result so far: 3073.0
The remainder is 188 after subtracting 2073 from 2261.
Take the next digit (0) from the dividend and append it to 188, then repeat: 1880 / 691

Advancing to step 8:
691 can be fit into 1880 2 times, resulting in a remainder of 498.
The next digit of our result is 2. 
Result so far: 30732.0
If we take 1382 away from 1880, we end up with 498.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4980, and continue the process.

Step 9:
691 can be fit into 4980 7 times, resulting in a remainder of 143.
Use 7 as the next digit of our solution. 
Result so far: 30732.7
Deduct 4837 from 4980 and we're left with 143.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

Let's proceed to step 10:
The number 691 fits into 1430 2 times, leaving a remainder of 48.
Write down 2 as next digit of the result. 
Result so far: 30732.72
Deduct 1382 from 1430 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 11:
691 can be fit into 480 0 times, resulting in a remainder of 480.
Write down 0 as next digit of the result. 
Result so far: 30732.72
If we take 0 away from 480, we end up with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Advancing to step 12:
691 goes into 4800 6 times with a remainder of 654.
The number 6 becomes the next digit in our result. 
Result so far: 30732.7206
Deduct 4146 from 4800 and we're left with 654.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6540, and continue the process.

Moving on to step 13:
When dividing 6540 by 691, we get 9 with a remainder of 321.
The next digit of our result is 9. 
Result so far: 30732.72069
Deduct 6219 from 6540 and we're left with 321.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

Moving on to step 14:
The number 691 fits into 3210 4 times, leaving a remainder of 446.
Record the quotient 4 as the next digit in the result. 
Result so far: 30732.720694
The remainder is 446 after subtracting 2764 from 3210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

Let's proceed to step 15:
If we divide 4460 by 691, we get 6 and a remainder of 314.
The number 6 becomes the next digit in our result. 
Result so far: 30732.7206946
If we take 4146 away from 4460, we end up with 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

On to step 16:
3140 divided by 691 is 4 with a remainder of 376.
The number 4 becomes the next digit in our result. 
Result so far: 30732.72069464
The remainder is 376 after subtracting 2764 from 3140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

The final result is 30732.72069464 with a remainder of 3.76e-07.