851953 ÷ 91 
The aim is to understand the frequency of 91 in 851953.

Moving on to step 1:
8 divided by 91 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 91

Let's proceed to step 2:
91 can be fit into 85 0 times, resulting in a remainder of 85.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 85, we end up with 85.
Bring next digit (1) of the dividend behind the 85 and repeat the process: 851 / 91

Advancing to step 3:
91 goes into 851 9 times with a remainder of 32.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we subtract 819 from 851, we get 32.
Bring next digit (9) of the dividend behind the 32 and repeat the process: 329 / 91

Let's proceed to step 4:
91 goes into 329 3 times with a remainder of 56.
The next digit of our result is 3. 
Result so far: 93.0
Deduct 273 from 329 and we're left with 56.
Include the next digit (5) from the dividend after 56, then repeat: 565 / 91

Going ahead to step 5:
91 goes into 565 6 times with a remainder of 19.
Put 6 as the next digit of the answer. 
Result so far: 936.0
Subtracting 546 from 565 leaves us with 19.
Bring next digit (3) of the dividend behind the 19 and repeat the process: 193 / 91

Moving on to step 6:
When dividing 193 by 91, we get 2 with a remainder of 11.
The next digit of our result is 2. 
Result so far: 9362.0
The remainder is 11 after subtracting 182 from 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 7:
When dividing 110 by 91, we get 1 with a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 9362.1
Subtract 91 from 110 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 8:
91 goes into 190 2 times with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 9362.12
Subtract 182 from 190 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 9:
91 goes into 80 0 times with a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 9362.12
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 10:
800 divided by 91 is 8 with a remainder of 72.
Record the quotient 8 as the next digit in the result. 
Result so far: 9362.1208
Subtract 728 from 800 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 11:
If we divide 720 by 91, we get 7 and a remainder of 83.
Use 7 as the next digit of our solution. 
Result so far: 9362.12087
If we subtract 637 from 720, we get 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Let's proceed to step 12:
If we divide 830 by 91, we get 9 and a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 9362.120879
Subtract 819 from 830 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 13:
91 goes into 110 1 times with a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 9362.1208791
If we subtract 91 from 110, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 14:
91 can be fit into 190 2 times, resulting in a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 9362.12087912
If we take 182 away from 190, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 9362.12087912 and a remainder of 8e-09.