We're dividing 964319 by 91 
The aim is to understand the frequency of 91 in 964319.

Let's proceed to step 1:
9 divided by 91 is 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Take the next digit (6) from the dividend and append it to 9, then repeat: 96 / 91

Advancing to step 2:
91 can be fit into 96 1 times, resulting in a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 5 after subtracting 91 from 96.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 91

Step 3:
The number 91 fits into 54 0 times, leaving a remainder of 54.
Use 0 as the next digit of our solution. 
Result so far: 10.0
The remainder is 54 after subtracting 0 from 54.
Fetch the next digit (3) from the dividend, attach it to 54 and continue: 543 / 91

On to step 4:
543 divided by 91 is 5 with a remainder of 88.
Write down 5 as next digit of the result. 
Result so far: 105.0
If we subtract 455 from 543, we get 88.
Take the next digit (1) from the dividend and append it to 88, then repeat: 881 / 91

Advancing to step 5:
881 divided by 91 is 9 with a remainder of 62.
The next digit of our result is 9. 
Result so far: 1059.0
Subtracting 819 from 881 leaves us with 62.
Grab the next digit (9) from the dividend, add it to 62, then carry on: 629 / 91

Advancing to step 6:
If we divide 629 by 91, we get 6 and a remainder of 83.
Write down 6 as next digit of the result. 
Result so far: 10596.0
If we subtract 546 from 629, we get 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Advancing to step 7:
830 divided by 91 is 9 with a remainder of 11.
The next digit of our result is 9. 
Result so far: 10596.9
If we subtract 819 from 830, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 8:
110 divided by 91 is 1 with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 10596.91
If we take 91 away from 110, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 9:
91 goes into 190 2 times with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 10596.912
Subtracting 182 from 190 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 10:
91 can be fit into 80 0 times, resulting in a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 10596.912
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 11:
If we divide 800 by 91, we get 8 and a remainder of 72.
Use 8 as the next digit of our solution. 
Result so far: 10596.91208
Deduct 728 from 800 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 12:
When dividing 720 by 91, we get 7 with a remainder of 83.
Use 7 as the next digit of our solution. 
Result so far: 10596.912087
Deduct 637 from 720 and we're left with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Moving on to step 13:
830 divided by 91 is 9 with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 10596.9120879
Subtracting 819 from 830 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 14:
91 goes into 110 1 times with a remainder of 19.
The next digit of our result is 1. 
Result so far: 10596.91208791
The remainder is 19 after subtracting 91 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Our division results in 10596.91208791 with a remaining 1.9e-08.