691335 ÷ 39 
The aim is to understand the frequency of 39 in 691335.

Let's proceed to step 1:
When dividing 6 by 39, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (9) from the dividend and append it to 6, then repeat: 69 / 39

Let's proceed to step 2:
When dividing 69 by 39, we get 1 with a remainder of 30.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 39 from 69 leaves us with 30.
Append the next digit (1) from the dividend to 30 and continue with: 301 / 39

Moving on to step 3:
39 can be fit into 301 7 times, resulting in a remainder of 28.
Put 7 as the next digit of the answer. 
Result so far: 17.0
The remainder is 28 after subtracting 273 from 301.
Fetch the next digit (3) from the dividend, attach it to 28 and continue: 283 / 39

Moving on to step 4:
The number 39 fits into 283 7 times, leaving a remainder of 10.
Put 7 as the next digit of the answer. 
Result so far: 177.0
Subtract 273 from 283 to get 10.
Take the next digit (3) from the dividend and append it to 10, then repeat: 103 / 39

Advancing to step 5:
When dividing 103 by 39, we get 2 with a remainder of 25.
Record the quotient 2 as the next digit in the result. 
Result so far: 1772.0
If we subtract 78 from 103, we get 25.
Bring next digit (5) of the dividend behind the 25 and repeat the process: 255 / 39

On to step 6:
When dividing 255 by 39, we get 6 with a remainder of 21.
Record the quotient 6 as the next digit in the result. 
Result so far: 17726.0
The remainder is 21 after subtracting 234 from 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 7:
210 divided by 39 is 5 with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 17726.5
Subtract 195 from 210 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 8:
The number 39 fits into 150 3 times, leaving a remainder of 33.
Write down 3 as next digit of the result. 
Result so far: 17726.53
Deduct 117 from 150 and we're left with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Going ahead to step 9:
If we divide 330 by 39, we get 8 and a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 17726.538
Deduct 312 from 330 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 10:
When dividing 180 by 39, we get 4 with a remainder of 24.
Put 4 as the next digit of the answer. 
Result so far: 17726.5384
If we take 156 away from 180, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 11:
The number 39 fits into 240 6 times, leaving a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 17726.53846
If we take 234 away from 240, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 12:
When dividing 60 by 39, we get 1 with a remainder of 21.
Put 1 as the next digit of the answer. 
Result so far: 17726.538461
The remainder is 21 after subtracting 39 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 13:
210 divided by 39 is 5 with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 17726.5384615
If we take 195 away from 210, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 14:
The number 39 fits into 150 3 times, leaving a remainder of 33.
Record the quotient 3 as the next digit in the result. 
Result so far: 17726.53846153
If we subtract 117 from 150, we get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

In conclusion, the division gives 17726.53846153 with a balance of 3.3e-08.