We're dividing 997404 by 91 
The aim is to understand the frequency of 91 in 997404.

Moving on to step 1:
When dividing 9 by 91, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 91

Let's proceed to step 2:
99 divided by 91 is 1 with a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 91 away from 99, we end up with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 91

Going ahead to step 3:
If we divide 87 by 91, we get 0 and a remainder of 87.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we take 0 away from 87, we end up with 87.
Fetch the next digit (4) from the dividend, attach it to 87 and continue: 874 / 91

On to step 4:
91 can be fit into 874 9 times, resulting in a remainder of 55.
Record the quotient 9 as the next digit in the result. 
Result so far: 109.0
Subtracting 819 from 874 leaves us with 55.
Include the next digit (0) from the dividend after 55, then repeat: 550 / 91

Let's proceed to step 5:
91 goes into 550 6 times with a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 1096.0
Deduct 546 from 550 and we're left with 4.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 91

Let's proceed to step 6:
91 can be fit into 44 0 times, resulting in a remainder of 44.
The next digit of our result is 0. 
Result so far: 10960.0
If we subtract 0 from 44, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 7:
91 goes into 440 4 times with a remainder of 76.
The next digit of our result is 4. 
Result so far: 10960.4
Subtract 364 from 440 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 8:
When dividing 760 by 91, we get 8 with a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 10960.48
Subtracting 728 from 760 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 9:
If we divide 320 by 91, we get 3 and a remainder of 47.
Put 3 as the next digit of the answer. 
Result so far: 10960.483
Deduct 273 from 320 and we're left with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Let's proceed to step 10:
470 divided by 91 is 5 with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 10960.4835
Subtract 455 from 470 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 11:
91 goes into 150 1 times with a remainder of 59.
Use 1 as the next digit of our solution. 
Result so far: 10960.48351
If we take 91 away from 150, we end up with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Moving on to step 12:
The number 91 fits into 590 6 times, leaving a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 10960.483516
The remainder is 44 after subtracting 546 from 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 13:
When dividing 440 by 91, we get 4 with a remainder of 76.
The next digit of our result is 4. 
Result so far: 10960.4835164
Deduct 364 from 440 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 14:
The number 91 fits into 760 8 times, leaving a remainder of 32.
The number 8 becomes the next digit in our result. 
Result so far: 10960.48351648
The remainder is 32 after subtracting 728 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The final result is 10960.48351648 with a remainder of 3.2e-08.