800063 divided by 91 
The aim is to understand the frequency of 91 in 800063.

Let's proceed to step 1:
When dividing 8 by 91, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 91

On to step 2:
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: 0.0
If we take 0 away from 80, we end up with 80.
Grab the next digit (0) from the dividend, add it to 80, then carry on: 800 / 91

Let's proceed to step 3:
The number 91 fits into 800 8 times, leaving a remainder of 72.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtracting 728 from 800 leaves us with 72.
Append the next digit (0) from the dividend to 72 and continue with: 720 / 91

Let's proceed to step 4:
When dividing 720 by 91, we get 7 with a remainder of 83.
The number 7 becomes the next digit in our result. 
Result so far: 87.0
Deduct 637 from 720 and we're left with 83.
Fetch the next digit (6) from the dividend, attach it to 83 and continue: 836 / 91

Step 5:
91 goes into 836 9 times with a remainder of 17.
The number 9 becomes the next digit in our result. 
Result so far: 879.0
If we take 819 away from 836, we end up with 17.
Take the next digit (3) from the dividend and append it to 17, then repeat: 173 / 91

Advancing to step 6:
When dividing 173 by 91, we get 1 with a remainder of 82.
Record the quotient 1 as the next digit in the result. 
Result so far: 8791.0
If we subtract 91 from 173, we get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Moving on to step 7:
The number 91 fits into 820 9 times, leaving a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 8791.9
Subtracting 819 from 820 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 8:
91 can be fit into 10 0 times, resulting in a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 8791.9
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 9:
100 divided by 91 is 1 with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 8791.901
Deduct 91 from 100 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 10:
When dividing 90 by 91, we get 0 with a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 8791.901
Subtracting 0 from 90 leaves us with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Let's proceed to step 11:
91 goes into 900 9 times with a remainder of 81.
The number 9 becomes the next digit in our result. 
Result so far: 8791.90109
Subtracting 819 from 900 leaves us with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Moving on to step 12:
The number 91 fits into 810 8 times, leaving a remainder of 82.
Write down 8 as next digit of the result. 
Result so far: 8791.901098
If we take 728 away from 810, we end up with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Moving on to step 13:
820 divided by 91 is 9 with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 8791.9010989
The remainder is 1 after subtracting 819 from 820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 14:
91 can be fit into 10 0 times, resulting in a remainder of 10.
The next digit of our result is 0. 
Result so far: 8791.9010989
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 8791.9010989 with a remainder of 1e-08.