We look at the division of 5434 by 39 
The aim is to understand the frequency of 39 in 5434.

Step 1:
39 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 39

Step 2:
If we divide 54 by 39, we get 1 and a remainder of 15.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 39 from 54 leaves us with 15.
Grab the next digit (3) from the dividend, add it to 15, then carry on: 153 / 39

Going ahead to step 3:
The number 39 fits into 153 3 times, leaving a remainder of 36.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Subtracting 117 from 153 leaves us with 36.
Append the next digit (4) from the dividend to 36 and continue with: 364 / 39

Let's proceed to step 4:
39 can be fit into 364 9 times, resulting in a remainder of 13.
Write down 9 as next digit of the result. 
Result so far: 139.0
If we take 351 away from 364, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 5:
39 goes into 130 3 times with a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 139.3
If we subtract 117 from 130, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 6:
39 can be fit into 130 3 times, resulting in a remainder of 13.
The next digit of our result is 3. 
Result so far: 139.33
The remainder is 13 after subtracting 117 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

The final result is 139.33 with a remainder of 0.013.