We look at the division of 660655 by 65 
The aim is to understand the frequency of 65 in 660655.

On to step 1:
The number 65 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 65

Moving on to step 2:
66 divided by 65 is 1 with a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 1 after subtracting 65 from 66.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 65

Moving on to step 3:
If we divide 10 by 65, we get 0 and a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtract 0 from 10 to get 10.
Grab the next digit (6) from the dividend, add it to 10, then carry on: 106 / 65

Moving on to step 4:
The number 65 fits into 106 1 times, leaving a remainder of 41.
The next digit of our result is 1. 
Result so far: 101.0
If we subtract 65 from 106, we get 41.
Append the next digit (5) from the dividend to 41 and continue with: 415 / 65

Moving on to step 5:
415 divided by 65 is 6 with a remainder of 25.
Record the quotient 6 as the next digit in the result. 
Result so far: 1016.0
The remainder is 25 after subtracting 390 from 415.
Grab the next digit (5) from the dividend, add it to 25, then carry on: 255 / 65

Let's proceed to step 6:
The number 65 fits into 255 3 times, leaving a remainder of 60.
Use 3 as the next digit of our solution. 
Result so far: 10163.0
Deduct 195 from 255 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 7:
65 goes into 600 9 times with a remainder of 15.
Record the quotient 9 as the next digit in the result. 
Result so far: 10163.9
If we take 585 away from 600, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 8:
The number 65 fits into 150 2 times, leaving a remainder of 20.
The next digit of our result is 2. 
Result so far: 10163.92
Subtracting 130 from 150 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 9:
When dividing 200 by 65, we get 3 with a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 10163.923
The remainder is 5 after subtracting 195 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 10:
The number 65 fits into 50 0 times, leaving a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 10163.923
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 11:
65 can be fit into 500 7 times, resulting in a remainder of 45.
Write down 7 as next digit of the result. 
Result so far: 10163.92307
If we subtract 455 from 500, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 12:
65 can be fit into 450 6 times, resulting in a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 10163.923076
Deduct 390 from 450 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 13:
65 goes into 600 9 times with a remainder of 15.
The number 9 becomes the next digit in our result. 
Result so far: 10163.9230769
If we take 585 away from 600, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 14:
65 goes into 150 2 times with a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 10163.92307692
The remainder is 20 after subtracting 130 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

In conclusion, the division gives 10163.92307692 with a balance of 2e-08.