Let's divide 307290 by 39
The aim is to understand the frequency of 39 in 307290.

Moving on to step 1:
When dividing 3 by 39, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 39

On to step 2:
30 divided by 39 is 0 with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 30, we get 30.
Fetch the next digit (7) from the dividend, attach it to 30 and continue: 307 / 39

On to step 3:
When dividing 307 by 39, we get 7 with a remainder of 34.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Deduct 273 from 307 and we're left with 34.
Append the next digit (2) from the dividend to 34 and continue with: 342 / 39

Moving on to step 4:
The number 39 fits into 342 8 times, leaving a remainder of 30.
Write down 8 as next digit of the result. 
Result so far: 78.0
Deduct 312 from 342 and we're left with 30.
Grab the next digit (9) from the dividend, add it to 30, then carry on: 309 / 39

Moving on to step 5:
309 divided by 39 is 7 with a remainder of 36.
Write down 7 as next digit of the result. 
Result so far: 787.0
Deduct 273 from 309 and we're left with 36.
Append the next digit (0) from the dividend to 36 and continue with: 360 / 39

Advancing to step 6:
When dividing 360 by 39, we get 9 with a remainder of 9.
Write down 9 as next digit of the result. 
Result so far: 7879.0
Deduct 351 from 360 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 7:
90 divided by 39 is 2 with a remainder of 12.
Record the quotient 2 as the next digit in the result. 
Result so far: 7879.2
If we subtract 78 from 90, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 8:
39 goes into 120 3 times with a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 7879.23
Subtract 117 from 120 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 9:
39 goes into 30 0 times with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 7879.23
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 10:
300 divided by 39 is 7 with a remainder of 27.
The number 7 becomes the next digit in our result. 
Result so far: 7879.2307
Subtracting 273 from 300 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Moving on to step 11:
270 divided by 39 is 6 with a remainder of 36.
The next digit of our result is 6. 
Result so far: 7879.23076
Subtract 234 from 270 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 12:
If we divide 360 by 39, we get 9 and a remainder of 9.
Use 9 as the next digit of our solution. 
Result so far: 7879.230769
The remainder is 9 after subtracting 351 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 13:
39 can be fit into 90 2 times, resulting in a remainder of 12.
Record the quotient 2 as the next digit in the result. 
Result so far: 7879.2307692
The remainder is 12 after subtracting 78 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 14:
39 goes into 120 3 times with a remainder of 3.
The next digit of our result is 3. 
Result so far: 7879.23076923
Subtract 117 from 120 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Our division results in 7879.23076923 with a remaining 3e-09.