We look at the division of 913409 by 65 
The aim is to understand the frequency of 65 in 913409.

On to step 1:
If we divide 9 by 65, we get 0 and a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Fetch the next digit (1) from the dividend, attach it to 9 and continue: 91 / 65

Going ahead to step 2:
91 divided by 65 is 1 with a remainder of 26.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 65 from 91 and we're left with 26.
Bring next digit (3) of the dividend behind the 26 and repeat the process: 263 / 65

Advancing to step 3:
If we divide 263 by 65, we get 4 and a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtract 260 from 263 to get 3.
Include the next digit (4) from the dividend after 3, then repeat: 34 / 65

Moving on to step 4:
If we divide 34 by 65, we get 0 and a remainder of 34.
Use 0 as the next digit of our solution. 
Result so far: 140.0
Deduct 0 from 34 and we're left with 34.
Include the next digit (0) from the dividend after 34, then repeat: 340 / 65

Let's proceed to step 5:
When dividing 340 by 65, we get 5 with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 1405.0
Subtracting 325 from 340 leaves us with 15.
Fetch the next digit (9) from the dividend, attach it to 15 and continue: 159 / 65

On to step 6:
When dividing 159 by 65, we get 2 with a remainder of 29.
The next digit of our result is 2. 
Result so far: 14052.0
Subtracting 130 from 159 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.

Advancing to step 7:
If we divide 290 by 65, we get 4 and a remainder of 30.
The number 4 becomes the next digit in our result. 
Result so far: 14052.4
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.

Step 8:
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: 14052.44
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.

The final outcome is 14052.44, with a leftover of 0.04.