We look at the division of 991337 by 39 
The aim is to understand the frequency of 39 in 991337.

Moving on to step 1:
39 can be fit into 9 0 times, resulting in a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 39

Advancing to step 2:
When dividing 99 by 39, we get 2 with a remainder of 21.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 78 from 99, we get 21.
Grab the next digit (1) from the dividend, add it to 21, then carry on: 211 / 39

Advancing to step 3:
The number 39 fits into 211 5 times, leaving a remainder of 16.
The next digit of our result is 5. 
Result so far: 25.0
If we take 195 away from 211, we end up with 16.
Fetch the next digit (3) from the dividend, attach it to 16 and continue: 163 / 39

Moving on to step 4:
If we divide 163 by 39, we get 4 and a remainder of 7.
The number 4 becomes the next digit in our result. 
Result so far: 254.0
If we take 156 away from 163, we end up with 7.
Bring next digit (3) of the dividend behind the 7 and repeat the process: 73 / 39

Moving on to step 5:
When dividing 73 by 39, we get 1 with a remainder of 34.
Write down 1 as next digit of the result. 
Result so far: 2541.0
The remainder is 34 after subtracting 39 from 73.
Take the next digit (7) from the dividend and append it to 34, then repeat: 347 / 39

Step 6:
When dividing 347 by 39, we get 8 with a remainder of 35.
The next digit of our result is 8. 
Result so far: 25418.0
If we take 312 away from 347, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 7:
350 divided by 39 is 8 with a remainder of 38.
The next digit of our result is 8. 
Result so far: 25418.8
The remainder is 38 after subtracting 312 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 8:
When dividing 380 by 39, we get 9 with a remainder of 29.
Put 9 as the next digit of the answer. 
Result so far: 25418.89
Subtracting 351 from 380 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 9:
When dividing 290 by 39, we get 7 with a remainder of 17.
The next digit of our result is 7. 
Result so far: 25418.897
Deduct 273 from 290 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 10:
If we divide 170 by 39, we get 4 and a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 25418.8974
The remainder is 14 after subtracting 156 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 11:
39 goes into 140 3 times with a remainder of 23.
Put 3 as the next digit of the answer. 
Result so far: 25418.89743
Subtract 117 from 140 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 12:
The number 39 fits into 230 5 times, leaving a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 25418.897435
The remainder is 35 after subtracting 195 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 13:
The number 39 fits into 350 8 times, leaving a remainder of 38.
The next digit of our result is 8. 
Result so far: 25418.8974358
Subtracting 312 from 350 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 14:
The number 39 fits into 380 9 times, leaving a remainder of 29.
The next digit of our result is 9. 
Result so far: 25418.89743589
Deduct 351 from 380 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Our division results in 25418.89743589 with a remaining 2.9e-08.