We're dividing 666192 by 39 
The aim is to understand the frequency of 39 in 666192.

Step 1:
39 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 39

Advancing to step 2:
If we divide 66 by 39, we get 1 and a remainder of 27.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 39 from 66 and we're left with 27.
Bring next digit (6) of the dividend behind the 27 and repeat the process: 276 / 39

On to step 3:
39 can be fit into 276 7 times, resulting in a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 17.0
If we subtract 273 from 276, we get 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 39

Going ahead to step 4:
When dividing 31 by 39, we get 0 with a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 170.0
Subtracting 0 from 31 leaves us with 31.
Include the next digit (9) from the dividend after 31, then repeat: 319 / 39

Advancing to step 5:
When dividing 319 by 39, we get 8 with a remainder of 7.
Write down 8 as next digit of the result. 
Result so far: 1708.0
If we take 312 away from 319, we end up with 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 39

Moving on to step 6:
39 can be fit into 72 1 times, resulting in a remainder of 33.
Use 1 as the next digit of our solution. 
Result so far: 17081.0
Deduct 39 from 72 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.

Step 7:
If we divide 330 by 39, we get 8 and a remainder of 18.
Write down 8 as next digit of the result. 
Result so far: 17081.8
The remainder is 18 after subtracting 312 from 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 8:
If we divide 180 by 39, we get 4 and a remainder of 24.
Put 4 as the next digit of the answer. 
Result so far: 17081.84
Subtract 156 from 180 to 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.

Moving on to step 9:
39 goes into 240 6 times with a remainder of 6.
Write down 6 as next digit of the result. 
Result so far: 17081.846
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.

Advancing to step 10:
If we divide 60 by 39, we get 1 and a remainder of 21.
The next digit of our result is 1. 
Result so far: 17081.8461
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.

Step 11:
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: 17081.84615
Deduct 195 from 210 and we're left 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.

Step 12:
39 can be fit into 150 3 times, resulting in a remainder of 33.
The next digit of our result is 3. 
Result so far: 17081.846153
If we take 117 away from 150, we end up 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.

Let's proceed to step 13:
If we divide 330 by 39, we get 8 and a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 17081.8461538
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.

Step 14:
The number 39 fits into 180 4 times, leaving a remainder of 24.
The next digit of our result is 4. 
Result so far: 17081.84615384
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.

The quotient of the division is 17081.84615384, and the remainder is 2.4e-08.