We look at the division of 533545 by 39 
The aim is to understand the frequency of 39 in 533545.

Going ahead to step 1:
When dividing 5 by 39, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 39

Let's proceed to step 2:
39 goes into 53 1 times with a remainder of 14.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 14 after subtracting 39 from 53.
Append the next digit (3) from the dividend to 14 and continue with: 143 / 39

On to step 3:
39 goes into 143 3 times with a remainder of 26.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Deduct 117 from 143 and we're left with 26.
Append the next digit (5) from the dividend to 26 and continue with: 265 / 39

Step 4:
39 goes into 265 6 times with a remainder of 31.
The number 6 becomes the next digit in our result. 
Result so far: 136.0
Deduct 234 from 265 and we're left with 31.
Grab the next digit (4) from the dividend, add it to 31, then carry on: 314 / 39

Going ahead to step 5:
If we divide 314 by 39, we get 8 and a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 1368.0
Subtracting 312 from 314 leaves us with 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 39

Step 6:
The number 39 fits into 25 0 times, leaving a remainder of 25.
Put 0 as the next digit of the answer. 
Result so far: 13680.0
If we take 0 away from 25, we end up with 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 7:
If we divide 250 by 39, we get 6 and a remainder of 16.
The next digit of our result is 6. 
Result so far: 13680.6
If we take 234 away from 250, we end up 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.

Moving on to step 8:
39 goes into 160 4 times with a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 13680.64
If we take 156 away from 160, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 9:
39 goes into 40 1 times with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 13680.641
Subtracting 39 from 40 leaves us 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.

Let's proceed to step 10:
If we divide 10 by 39, we get 0 and a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 13680.641
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.

Moving on to step 11:
39 goes into 100 2 times with a remainder of 22.
The next digit of our result is 2. 
Result so far: 13680.64102
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.

Let's proceed to step 12:
220 divided by 39 is 5 with a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 13680.641025
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.

Advancing to step 13:
If we divide 250 by 39, we get 6 and a remainder of 16.
Record the quotient 6 as the next digit in the result. 
Result so far: 13680.6410256
The remainder is 16 after subtracting 234 from 250.
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 14:
39 goes into 160 4 times with a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 13680.64102564
Subtract 156 from 160 to 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.

The final outcome is 13680.64102564, with a leftover of 4e-09.