We look at the division of 13410036 by 691 
The aim is to understand the frequency of 691 in 13410036.

Step 1:
When dividing 1 by 691, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 691

Moving on to step 2:
691 goes into 13 0 times with a remainder of 13.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 13 to get 13.
Take the next digit (4) from the dividend and append it to 13, then repeat: 134 / 691

Moving on to step 3:
691 goes into 134 0 times with a remainder of 134.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 134, we get 134.
Include the next digit (1) from the dividend after 134, then repeat: 1341 / 691

Going ahead to step 4:
691 goes into 1341 1 times with a remainder of 650.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 691 away from 1341, we end up with 650.
Append the next digit (0) from the dividend to 650 and continue with: 6500 / 691

Moving on to step 5:
6500 divided by 691 is 9 with a remainder of 281.
The next digit of our result is 9. 
Result so far: 19.0
Deduct 6219 from 6500 and we're left with 281.
Bring next digit (0) of the dividend behind the 281 and repeat the process: 2810 / 691

Moving on to step 6:
691 can be fit into 2810 4 times, resulting in a remainder of 46.
The next digit of our result is 4. 
Result so far: 194.0
If we subtract 2764 from 2810, we get 46.
Grab the next digit (3) from the dividend, add it to 46, then carry on: 463 / 691

Moving on to step 7:
The number 691 fits into 463 0 times, leaving a remainder of 463.
Write down 0 as next digit of the result. 
Result so far: 1940.0
Subtracting 0 from 463 leaves us with 463.
Take the next digit (6) from the dividend and append it to 463, then repeat: 4636 / 691

On to step 8:
If we divide 4636 by 691, we get 6 and a remainder of 490.
The number 6 becomes the next digit in our result. 
Result so far: 19406.0
If we subtract 4146 from 4636, we get 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

On to step 9:
When dividing 4900 by 691, we get 7 with a remainder of 63.
Use 7 as the next digit of our solution. 
Result so far: 19406.7
The remainder is 63 after subtracting 4837 from 4900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Step 10:
The number 691 fits into 630 0 times, leaving a remainder of 630.
The next digit of our result is 0. 
Result so far: 19406.7
Deduct 0 from 630 and we're left with 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6300, and continue the process.

Let's proceed to step 11:
If we divide 6300 by 691, we get 9 and a remainder of 81.
Write down 9 as next digit of the result. 
Result so far: 19406.709
If we take 6219 away from 6300, we end up with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Step 12:
691 goes into 810 1 times with a remainder of 119.
Put 1 as the next digit of the answer. 
Result so far: 19406.7091
Subtracting 691 from 810 leaves us with 119.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

Step 13:
691 can be fit into 1190 1 times, resulting in a remainder of 499.
Use 1 as the next digit of our solution. 
Result so far: 19406.70911
If we subtract 691 from 1190, we get 499.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4990, and continue the process.

The quotient of the division is 19406.70911, and the remainder is 0.000499.