862864 divided by 91 
The aim is to understand the frequency of 91 in 862864.

Let's proceed to step 1:
When dividing 8 by 91, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 91

Step 2:
The number 91 fits into 86 0 times, leaving a remainder of 86.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 86, we get 86.
Bring next digit (2) of the dividend behind the 86 and repeat the process: 862 / 91

Advancing to step 3:
862 divided by 91 is 9 with a remainder of 43.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtracting 819 from 862 leaves us with 43.
Include the next digit (8) from the dividend after 43, then repeat: 438 / 91

Moving on to step 4:
91 goes into 438 4 times with a remainder of 74.
Record the quotient 4 as the next digit in the result. 
Result so far: 94.0
If we take 364 away from 438, we end up with 74.
Include the next digit (6) from the dividend after 74, then repeat: 746 / 91

Step 5:
If we divide 746 by 91, we get 8 and a remainder of 18.
The next digit of our result is 8. 
Result so far: 948.0
Deduct 728 from 746 and we're left with 18.
Include the next digit (4) from the dividend after 18, then repeat: 184 / 91

Going ahead to step 6:
91 goes into 184 2 times with a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 9482.0
Deduct 182 from 184 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.

Advancing to step 7:
If we divide 20 by 91, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 9482.0
Subtracting 0 from 20 leaves us 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.

Let's proceed to step 8:
When dividing 200 by 91, we get 2 with a remainder of 18.
The next digit of our result is 2. 
Result so far: 9482.02
Subtracting 182 from 200 leaves us 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.

Let's proceed to step 9:
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: 9482.021
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.

Going ahead to step 10:
91 goes into 890 9 times with a remainder of 71.
Use 9 as the next digit of our solution. 
Result so far: 9482.0219
The remainder is 71 after subtracting 819 from 890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Let's proceed to step 11:
When dividing 710 by 91, we get 7 with a remainder of 73.
The next digit of our result is 7. 
Result so far: 9482.02197
If we take 637 away from 710, we end up with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Moving on to step 12:
91 goes into 730 8 times with a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 9482.021978
If we take 728 away from 730, we end up 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.

Moving on to step 13:
If we divide 20 by 91, we get 0 and a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 9482.021978
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.

Advancing to step 14:
The number 91 fits into 200 2 times, leaving a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 9482.02197802
If we take 182 away from 200, we end up 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.

The final result is 9482.02197802 with a remainder of 1.8e-08.