463849 divided by 91 
The aim is to understand the frequency of 91 in 463849.

Moving on to step 1:
When dividing 4 by 91, we get 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Append the next digit (6) from the dividend to 4 and continue with: 46 / 91

Moving on to step 2:
91 goes into 46 0 times with a remainder of 46.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 46 and we're left with 46.
Take the next digit (3) from the dividend and append it to 46, then repeat: 463 / 91

On to step 3:
If we divide 463 by 91, we get 5 and a remainder of 8.
The next digit of our result is 5. 
Result so far: 5.0
If we take 455 away from 463, we end up with 8.
Take the next digit (8) from the dividend and append it to 8, then repeat: 88 / 91

Moving on to step 4:
91 can be fit into 88 0 times, resulting in a remainder of 88.
Record the quotient 0 as the next digit in the result. 
Result so far: 50.0
If we subtract 0 from 88, we get 88.
Bring next digit (4) of the dividend behind the 88 and repeat the process: 884 / 91

Step 5:
91 can be fit into 884 9 times, resulting in a remainder of 65.
The number 9 becomes the next digit in our result. 
Result so far: 509.0
The remainder is 65 after subtracting 819 from 884.
Grab the next digit (9) from the dividend, add it to 65, then carry on: 659 / 91

Moving on to step 6:
If we divide 659 by 91, we get 7 and a remainder of 22.
Use 7 as the next digit of our solution. 
Result so far: 5097.0
Subtracting 637 from 659 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 7:
220 divided by 91 is 2 with a remainder of 38.
Use 2 as the next digit of our solution. 
Result so far: 5097.2
If we subtract 182 from 220, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 8:
When dividing 380 by 91, we get 4 with a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 5097.24
Subtract 364 from 380 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 9:
The number 91 fits into 160 1 times, leaving a remainder of 69.
Write down 1 as next digit of the result. 
Result so far: 5097.241
The remainder is 69 after subtracting 91 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Let's proceed to step 10:
When dividing 690 by 91, we get 7 with a remainder of 53.
Record the quotient 7 as the next digit in the result. 
Result so far: 5097.2417
If we subtract 637 from 690, we get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 11:
91 goes into 530 5 times with a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 5097.24175
If we take 455 away from 530, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 12:
The number 91 fits into 750 8 times, leaving a remainder of 22.
The next digit of our result is 8. 
Result so far: 5097.241758
Subtracting 728 from 750 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 13:
220 divided by 91 is 2 with a remainder of 38.
Record the quotient 2 as the next digit in the result. 
Result so far: 5097.2417582
The remainder is 38 after subtracting 182 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 14:
91 can be fit into 380 4 times, resulting in a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 5097.24175824
If we take 364 away from 380, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final outcome is 5097.24175824, with a leftover of 1.6e-08.