We're dividing 321069 by 39 
The aim is to understand the frequency of 39 in 321069.

Going ahead to step 1:
39 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (2) from the dividend, attach it to 3 and continue: 32 / 39

On to step 2:
When dividing 32 by 39, we get 0 with a remainder of 32.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 32 after subtracting 0 from 32.
Take the next digit (1) from the dividend and append it to 32, then repeat: 321 / 39

On to step 3:
321 divided by 39 is 8 with a remainder of 9.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Deduct 312 from 321 and we're left with 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 39

On to step 4:
39 goes into 90 2 times with a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 82.0
The remainder is 12 after subtracting 78 from 90.
Bring next digit (6) of the dividend behind the 12 and repeat the process: 126 / 39

On to step 5:
If we divide 126 by 39, we get 3 and a remainder of 9.
The next digit of our result is 3. 
Result so far: 823.0
Deduct 117 from 126 and we're left with 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 39

Moving on to step 6:
39 goes into 99 2 times with a remainder of 21.
Write down 2 as next digit of the result. 
Result so far: 8232.0
Deduct 78 from 99 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 7:
39 goes into 210 5 times with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 8232.5
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.

Going ahead to step 8:
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: 8232.53
The remainder is 33 after subtracting 117 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on 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: 8232.538
If we subtract 312 from 330, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 10:
The number 39 fits into 180 4 times, leaving a remainder of 24.
The next digit of our result is 4. 
Result so far: 8232.5384
If we subtract 156 from 180, we get 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:
When dividing 240 by 39, we get 6 with a remainder of 6.
The next digit of our result is 6. 
Result so far: 8232.53846
Subtract 234 from 240 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 12:
When dividing 60 by 39, we get 1 with a remainder of 21.
The number 1 becomes the next digit in our result. 
Result so far: 8232.538461
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.

Going ahead to step 13:
If we divide 210 by 39, we get 5 and a remainder of 15.
The next digit of our result is 5. 
Result so far: 8232.5384615
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:
39 goes into 150 3 times with a remainder of 33.
The next digit of our result is 3. 
Result so far: 8232.53846153
The remainder is 33 after subtracting 117 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

The final outcome is 8232.53846153, with a leftover of 3.3e-08.