768217 divided by 39 
The aim is to understand the frequency of 39 in 768217.

Step 1:
When dividing 7 by 39, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (6) of the dividend behind the 7 and repeat the process: 76 / 39

Moving on to step 2:
When dividing 76 by 39, we get 1 with a remainder of 37.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 39 from 76 leaves us with 37.
Fetch the next digit (8) from the dividend, attach it to 37 and continue: 378 / 39

On to step 3:
39 goes into 378 9 times with a remainder of 27.
Put 9 as the next digit of the answer. 
Result so far: 19.0
Subtract 351 from 378 to get 27.
Grab the next digit (2) from the dividend, add it to 27, then carry on: 272 / 39

Going ahead to step 4:
39 goes into 272 6 times with a remainder of 38.
Use 6 as the next digit of our solution. 
Result so far: 196.0
If we subtract 234 from 272, we get 38.
Fetch the next digit (1) from the dividend, attach it to 38 and continue: 381 / 39

Moving on to step 5:
39 goes into 381 9 times with a remainder of 30.
Use 9 as the next digit of our solution. 
Result so far: 1969.0
Deduct 351 from 381 and we're left with 30.
Include the next digit (7) from the dividend after 30, then repeat: 307 / 39

Advancing to step 6:
39 can be fit into 307 7 times, resulting in a remainder of 34.
The number 7 becomes the next digit in our result. 
Result so far: 19697.0
Deduct 273 from 307 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 7:
39 can be fit into 340 8 times, resulting in a remainder of 28.
The next digit of our result is 8. 
Result so far: 19697.8
Subtract 312 from 340 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 8:
If we divide 280 by 39, we get 7 and a remainder of 7.
The next digit of our result is 7. 
Result so far: 19697.87
The remainder is 7 after subtracting 273 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 9:
39 can be fit into 70 1 times, resulting in a remainder of 31.
Write down 1 as next digit of the result. 
Result so far: 19697.871
Deduct 39 from 70 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 10:
310 divided by 39 is 7 with a remainder of 37.
Use 7 as the next digit of our solution. 
Result so far: 19697.8717
The remainder is 37 after subtracting 273 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 11:
The number 39 fits into 370 9 times, leaving a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 19697.87179
Subtract 351 from 370 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 12:
39 goes into 190 4 times with a remainder of 34.
Use 4 as the next digit of our solution. 
Result so far: 19697.871794
Deduct 156 from 190 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 13:
39 can be fit into 340 8 times, resulting in a remainder of 28.
Record the quotient 8 as the next digit in the result. 
Result so far: 19697.8717948
If we take 312 away from 340, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 14:
When dividing 280 by 39, we get 7 with a remainder of 7.
Use 7 as the next digit of our solution. 
Result so far: 19697.87179487
Subtracting 273 from 280 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Our division results in 19697.87179487 with a remaining 7e-09.