We look at the division of 6659 by 65 
The aim is to understand the frequency of 65 in 6659.

On to step 1:
65 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 65

Going ahead to step 2:
65 goes into 66 1 times with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 65 from 66 and we're left with 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 65

Let's proceed to step 3:
15 divided by 65 is 0 with a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we take 0 away from 15, we end up with 15.
Include the next digit (9) from the dividend after 15, then repeat: 159 / 65

Advancing to step 4:
65 can be fit into 159 2 times, resulting in a remainder of 29.
Write down 2 as next digit of the result. 
Result so far: 102.0
The remainder is 29 after subtracting 130 from 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 5:
If we divide 290 by 65, we get 4 and a remainder of 30.
The next digit of our result is 4. 
Result so far: 102.4
Subtracting 260 from 290 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 6:
When dividing 300 by 65, we get 4 with a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 102.44
Deduct 260 from 300 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Our division results in 102.44 with a remaining 0.04.