We're dividing 743272 by 39 
The aim is to understand the frequency of 39 in 743272.

Moving on to step 1:
If we divide 7 by 39, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Grab the next digit (4) from the dividend, add it to 7, then carry on: 74 / 39

Going ahead to step 2:
39 goes into 74 1 times with a remainder of 35.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 39 from 74, we get 35.
Take the next digit (3) from the dividend and append it to 35, then repeat: 353 / 39

Step 3:
353 divided by 39 is 9 with a remainder of 2.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
If we take 351 away from 353, we end up with 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 39

Moving on to step 4:
If we divide 22 by 39, we get 0 and a remainder of 22.
Write down 0 as next digit of the result. 
Result so far: 190.0
Subtracting 0 from 22 leaves us with 22.
Take the next digit (7) from the dividend and append it to 22, then repeat: 227 / 39

Moving on to step 5:
When dividing 227 by 39, we get 5 with a remainder of 32.
Use 5 as the next digit of our solution. 
Result so far: 1905.0
If we take 195 away from 227, we end up with 32.
Append the next digit (2) from the dividend to 32 and continue with: 322 / 39

On to step 6:
When dividing 322 by 39, we get 8 with a remainder of 10.
The next digit of our result is 8. 
Result so far: 19058.0
If we take 312 away from 322, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 7:
100 divided by 39 is 2 with a remainder of 22.
Put 2 as the next digit of the answer. 
Result so far: 19058.2
Deduct 78 from 100 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 8:
If we divide 220 by 39, we get 5 and a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 19058.25
Subtract 195 from 220 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 9:
If we divide 250 by 39, we get 6 and a remainder of 16.
Put 6 as the next digit of the answer. 
Result so far: 19058.256
Subtracting 234 from 250 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 10:
39 can be fit into 160 4 times, resulting in a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 19058.2564
If we subtract 156 from 160, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 11:
The number 39 fits into 40 1 times, leaving a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 19058.25641
Deduct 39 from 40 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 12:
39 can be fit into 10 0 times, resulting in a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 19058.25641
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 13:
39 goes into 100 2 times with a remainder of 22.
Use 2 as the next digit of our solution. 
Result so far: 19058.2564102
Subtracting 78 from 100 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 14:
The number 39 fits into 220 5 times, leaving a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 19058.25641025
If we subtract 195 from 220, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

After the division, we end up with 19058.25641025 and a remainder of 2.5e-08.