We look at the division of 91025960 by 65 
The aim is to understand the frequency of 65 in 91025960.

Step 1:
If we divide 9 by 65, we get 0 and a remainder of 9.
The number 0 becomes the next digit in our result. 
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

Advancing to step 2:
When dividing 91 by 65, we get 1 with a remainder of 26.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 65 from 91 to get 26.
Take the next digit (0) from the dividend and append it to 26, then repeat: 260 / 65

Advancing to step 3:
If we divide 260 by 65, we get 4 and a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
If we subtract 260 from 260, we get 0.
Bring next digit (2) of the dividend behind the 0 and repeat the process: 2 / 65

Moving on to step 4:
65 goes into 2 0 times with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 140.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 65

Advancing to step 5:
25 divided by 65 is 0 with a remainder of 25.
The next digit of our result is 0. 
Result so far: 1400.0
If we take 0 away from 25, we end up with 25.
Include the next digit (9) from the dividend after 25, then repeat: 259 / 65

Step 6:
65 goes into 259 3 times with a remainder of 64.
Record the quotient 3 as the next digit in the result. 
Result so far: 14003.0
If we take 195 away from 259, we end up with 64.
Take the next digit (6) from the dividend and append it to 64, then repeat: 646 / 65

Advancing to step 7:
If we divide 646 by 65, we get 9 and a remainder of 61.
Use 9 as the next digit of our solution. 
Result so far: 140039.0
The remainder is 61 after subtracting 585 from 646.
Append the next digit (0) from the dividend to 61 and continue with: 610 / 65

On to step 8:
65 can be fit into 610 9 times, resulting in a remainder of 25.
Record the quotient 9 as the next digit in the result. 
Result so far: 1400399.0
If we subtract 585 from 610, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 9:
65 goes into 250 3 times with a remainder of 55.
Put 3 as the next digit of the answer. 
Result so far: 1400399.3
Deduct 195 from 250 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Advancing to step 10:
When dividing 550 by 65, we get 8 with a remainder of 30.
Put 8 as the next digit of the answer. 
Result so far: 1400399.38
Subtract 520 from 550 to 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.

On to step 11:
The number 65 fits into 300 4 times, leaving a remainder of 40.
Use 4 as the next digit of our solution. 
Result so far: 1400399.384
Subtract 260 from 300 to 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.

Step 12:
65 can be fit into 400 6 times, resulting in a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 1400399.3846
The remainder is 10 after subtracting 390 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 13:
65 goes into 100 1 times with a remainder of 35.
The next digit of our result is 1. 
Result so far: 1400399.38461
If we subtract 65 from 100, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 14:
The number 65 fits into 350 5 times, leaving a remainder of 25.
The next digit of our result is 5. 
Result so far: 1400399.384615
Subtract 325 from 350 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 15:
The number 65 fits into 250 3 times, leaving a remainder of 55.
Put 3 as the next digit of the answer. 
Result so far: 1400399.3846153
The remainder is 55 after subtracting 195 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Step 16:
The number 65 fits into 550 8 times, leaving a remainder of 30.
Record the quotient 8 as the next digit in the result. 
Result so far: 1400399.38461538
If we subtract 520 from 550, 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.

Our division results in 1400399.38461538 with a remaining 3e-08.