We look at the division of 669139 by 65 
The aim is to understand the frequency of 65 in 669139.

Moving on to step 1:
When dividing 6 by 65, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 65

Advancing to step 2:
If we divide 66 by 65, we get 1 and a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 65 from 66 to get 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 65

Step 3:
65 goes into 19 0 times with a remainder of 19.
Write down 0 as next digit of the result. 
Result so far: 10.0
The remainder is 19 after subtracting 0 from 19.
Fetch the next digit (1) from the dividend, attach it to 19 and continue: 191 / 65

Going ahead to step 4:
65 goes into 191 2 times with a remainder of 61.
The next digit of our result is 2. 
Result so far: 102.0
If we take 130 away from 191, we end up with 61.
Grab the next digit (3) from the dividend, add it to 61, then carry on: 613 / 65

Let's proceed to step 5:
The number 65 fits into 613 9 times, leaving a remainder of 28.
Record the quotient 9 as the next digit in the result. 
Result so far: 1029.0
Subtract 585 from 613 to get 28.
Bring next digit (9) of the dividend behind the 28 and repeat the process: 289 / 65

On to step 6:
289 divided by 65 is 4 with a remainder of 29.
Record the quotient 4 as the next digit in the result. 
Result so far: 10294.0
Subtracting 260 from 289 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 7:
65 goes into 290 4 times with a remainder of 30.
Record the quotient 4 as the next digit in the result. 
Result so far: 10294.4
If we subtract 260 from 290, we get 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 8:
65 goes into 300 4 times with a remainder of 40.
The next digit of our result is 4. 
Result so far: 10294.44
If we subtract 260 from 300, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

After the division, we end up with 10294.44 and a remainder of 0.04.