458895 divided by 91 
The aim is to understand the frequency of 91 in 458895.

Advancing to step 1:
When dividing 4 by 91, we get 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 91

Going ahead to step 2:
91 can be fit into 45 0 times, resulting in a remainder of 45.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 45 to get 45.
Take the next digit (8) from the dividend and append it to 45, then repeat: 458 / 91

Going ahead to step 3:
91 can be fit into 458 5 times, resulting in a remainder of 3.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtracting 455 from 458 leaves us with 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 91

On to step 4:
91 can be fit into 38 0 times, resulting in a remainder of 38.
The number 0 becomes the next digit in our result. 
Result so far: 50.0
If we subtract 0 from 38, we get 38.
Include the next digit (9) from the dividend after 38, then repeat: 389 / 91

Going ahead to step 5:
If we divide 389 by 91, we get 4 and a remainder of 25.
The number 4 becomes the next digit in our result. 
Result so far: 504.0
Deduct 364 from 389 and we're left with 25.
Include the next digit (5) from the dividend after 25, then repeat: 255 / 91

Advancing to step 6:
When dividing 255 by 91, we get 2 with a remainder of 73.
The next digit of our result is 2. 
Result so far: 5042.0
Subtract 182 from 255 to get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

On to step 7:
The number 91 fits into 730 8 times, leaving a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 5042.8
Deduct 728 from 730 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
91 goes into 20 0 times with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 5042.8
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 9:
The number 91 fits into 200 2 times, leaving a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 5042.802
Deduct 182 from 200 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 10:
91 can be fit into 180 1 times, resulting in a remainder of 89.
The number 1 becomes the next digit in our result. 
Result so far: 5042.8021
The remainder is 89 after subtracting 91 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Step 11:
91 can be fit into 890 9 times, resulting in a remainder of 71.
The next digit of our result is 9. 
Result so far: 5042.80219
Subtract 819 from 890 to get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Going ahead to step 12:
When dividing 710 by 91, we get 7 with a remainder of 73.
The next digit of our result is 7. 
Result so far: 5042.802197
Subtract 637 from 710 to get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

On to step 13:
730 divided by 91 is 8 with a remainder of 2.
The next digit of our result is 8. 
Result so far: 5042.8021978
Deduct 728 from 730 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 14:
20 divided by 91 is 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 5042.8021978
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

In conclusion, the division gives 5042.8021978 with a balance of 2e-08.