We're dividing 699659 by 39 
The aim is to understand the frequency of 39 in 699659.

Let's proceed to step 1:
If we divide 6 by 39, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (9) from the dividend, attach it to 6 and continue: 69 / 39

Step 2:
39 goes into 69 1 times with a remainder of 30.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 30 after subtracting 39 from 69.
Bring next digit (9) of the dividend behind the 30 and repeat the process: 309 / 39

Step 3:
The number 39 fits into 309 7 times, leaving a remainder of 36.
The next digit of our result is 7. 
Result so far: 17.0
Subtract 273 from 309 to get 36.
Grab the next digit (6) from the dividend, add it to 36, then carry on: 366 / 39

Going ahead to step 4:
366 divided by 39 is 9 with a remainder of 15.
Use 9 as the next digit of our solution. 
Result so far: 179.0
If we take 351 away from 366, we end up with 15.
Grab the next digit (5) from the dividend, add it to 15, then carry on: 155 / 39

Step 5:
39 can be fit into 155 3 times, resulting in a remainder of 38.
The next digit of our result is 3. 
Result so far: 1793.0
The remainder is 38 after subtracting 117 from 155.
Fetch the next digit (9) from the dividend, attach it to 38 and continue: 389 / 39

Going ahead to step 6:
39 goes into 389 9 times with a remainder of 38.
Use 9 as the next digit of our solution. 
Result so far: 17939.0
If we subtract 351 from 389, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 7:
39 can be fit into 380 9 times, resulting in a remainder of 29.
Put 9 as the next digit of the answer. 
Result so far: 17939.9
If we subtract 351 from 380, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Advancing to step 8:
39 can be fit into 290 7 times, resulting in a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 17939.97
If we subtract 273 from 290, we get 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 9:
The number 39 fits into 170 4 times, leaving a remainder of 14.
The next digit of our result is 4. 
Result so far: 17939.974
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.

Going ahead to step 10:
39 goes into 140 3 times with a remainder of 23.
Record the quotient 3 as the next digit in the result. 
Result so far: 17939.9743
Deduct 117 from 140 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 11:
If we divide 230 by 39, we get 5 and a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 17939.97435
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 12:
The number 39 fits into 350 8 times, leaving a remainder of 38.
Record the quotient 8 as the next digit in the result. 
Result so far: 17939.974358
Deduct 312 from 350 and we're left 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.

Advancing to step 13:
When dividing 380 by 39, we get 9 with a remainder of 29.
The next digit of our result is 9. 
Result so far: 17939.9743589
The remainder is 29 after subtracting 351 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 14:
39 can be fit into 290 7 times, resulting in a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 17939.97435897
Subtracting 273 from 290 leaves us 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.

The final outcome is 17939.97435897, with a leftover of 1.7e-08.