We look at the division of 124148 by 39 
The aim is to understand the frequency of 39 in 124148.

Step 1:
When dividing 1 by 39, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 39

Advancing to step 2:
12 divided by 39 is 0 with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Take the next digit (4) from the dividend and append it to 12, then repeat: 124 / 39

Going ahead to step 3:
The number 39 fits into 124 3 times, leaving a remainder of 7.
The next digit of our result is 3. 
Result so far: 3.0
Subtract 117 from 124 to get 7.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 39

Moving on to step 4:
If we divide 71 by 39, we get 1 and a remainder of 32.
Write down 1 as next digit of the result. 
Result so far: 31.0
Subtract 39 from 71 to get 32.
Grab the next digit (4) from the dividend, add it to 32, then carry on: 324 / 39

Let's proceed to step 5:
39 goes into 324 8 times with a remainder of 12.
The next digit of our result is 8. 
Result so far: 318.0
Deduct 312 from 324 and we're left with 12.
Fetch the next digit (8) from the dividend, attach it to 12 and continue: 128 / 39

Moving on to step 6:
128 divided by 39 is 3 with a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 3183.0
If we subtract 117 from 128, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 7:
39 goes into 110 2 times with a remainder of 32.
The next digit of our result is 2. 
Result so far: 3183.2
Deduct 78 from 110 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 8:
320 divided by 39 is 8 with a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 3183.28
If we subtract 312 from 320, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 9:
39 can be fit into 80 2 times, resulting in a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 3183.282
Deduct 78 from 80 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 10:
The number 39 fits into 20 0 times, leaving a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 3183.282
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 11:
39 can be fit into 200 5 times, resulting in a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 3183.28205
Subtract 195 from 200 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 12:
The number 39 fits into 50 1 times, leaving a remainder of 11.
Use 1 as the next digit of our solution. 
Result so far: 3183.282051
Subtracting 39 from 50 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 13:
110 divided by 39 is 2 with a remainder of 32.
Record the quotient 2 as the next digit in the result. 
Result so far: 3183.2820512
Subtracting 78 from 110 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 14:
The number 39 fits into 320 8 times, leaving a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 3183.28205128
The remainder is 8 after subtracting 312 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final result is 3183.28205128 with a remainder of 8e-09.