We look at the division of 65917 by 91 
The aim is to understand the frequency of 91 in 65917.

Advancing to step 1:
6 divided by 91 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 91

Advancing to step 2:
When dividing 65 by 91, we get 0 with a remainder of 65.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 65, we end up with 65.
Bring next digit (9) of the dividend behind the 65 and repeat the process: 659 / 91

Let's proceed to step 3:
659 divided by 91 is 7 with a remainder of 22.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we take 637 away from 659, we end up with 22.
Include the next digit (1) from the dividend after 22, then repeat: 221 / 91

Advancing to step 4:
If we divide 221 by 91, we get 2 and a remainder of 39.
Write down 2 as next digit of the result. 
Result so far: 72.0
Deduct 182 from 221 and we're left with 39.
Append the next digit (7) from the dividend to 39 and continue with: 397 / 91

On to step 5:
If we divide 397 by 91, we get 4 and a remainder of 33.
The next digit of our result is 4. 
Result so far: 724.0
Subtracting 364 from 397 leaves us with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 6:
The number 91 fits into 330 3 times, leaving a remainder of 57.
Write down 3 as next digit of the result. 
Result so far: 724.3
The remainder is 57 after subtracting 273 from 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 7:
The number 91 fits into 570 6 times, leaving a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 724.36
Deduct 546 from 570 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 8:
91 can be fit into 240 2 times, resulting in a remainder of 58.
Record the quotient 2 as the next digit in the result. 
Result so far: 724.362
If we subtract 182 from 240, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 9:
580 divided by 91 is 6 with a remainder of 34.
Record the quotient 6 as the next digit in the result. 
Result so far: 724.3626
Deduct 546 from 580 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 10:
91 can be fit into 340 3 times, resulting in a remainder of 67.
Use 3 as the next digit of our solution. 
Result so far: 724.36263
If we subtract 273 from 340, we get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 11:
670 divided by 91 is 7 with a remainder of 33.
Write down 7 as next digit of the result. 
Result so far: 724.362637
Subtract 637 from 670 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Going ahead to step 12:
91 goes into 330 3 times with a remainder of 57.
Record the quotient 3 as the next digit in the result. 
Result so far: 724.3626373
If we take 273 away from 330, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 13:
570 divided by 91 is 6 with a remainder of 24.
Write down 6 as next digit of the result. 
Result so far: 724.36263736
If we subtract 546 from 570, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final result is 724.36263736 with a remainder of 2.4e-08.