We're dividing 948379 by 91 
The aim is to understand the frequency of 91 in 948379.

Moving on to step 1:
When dividing 9 by 91, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Append the next digit (4) from the dividend to 9 and continue with: 94 / 91

Moving on to step 2:
The number 91 fits into 94 1 times, leaving a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 91 from 94 to get 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 91

Step 3:
91 can be fit into 38 0 times, resulting in a remainder of 38.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we subtract 0 from 38, we get 38.
Fetch the next digit (3) from the dividend, attach it to 38 and continue: 383 / 91

Let's proceed to step 4:
If we divide 383 by 91, we get 4 and a remainder of 19.
Put 4 as the next digit of the answer. 
Result so far: 104.0
The remainder is 19 after subtracting 364 from 383.
Bring next digit (7) of the dividend behind the 19 and repeat the process: 197 / 91

Step 5:
If we divide 197 by 91, we get 2 and a remainder of 15.
Record the quotient 2 as the next digit in the result. 
Result so far: 1042.0
Subtracting 182 from 197 leaves us with 15.
Append the next digit (9) from the dividend to 15 and continue with: 159 / 91

Advancing to step 6:
91 goes into 159 1 times with a remainder of 68.
Use 1 as the next digit of our solution. 
Result so far: 10421.0
If we subtract 91 from 159, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 7:
When dividing 680 by 91, we get 7 with a remainder of 43.
Put 7 as the next digit of the answer. 
Result so far: 10421.7
Deduct 637 from 680 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Advancing to step 8:
When dividing 430 by 91, we get 4 with a remainder of 66.
The number 4 becomes the next digit in our result. 
Result so far: 10421.74
Deduct 364 from 430 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 9:
91 can be fit into 660 7 times, resulting in a remainder of 23.
The next digit of our result is 7. 
Result so far: 10421.747
The remainder is 23 after subtracting 637 from 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 10:
If we divide 230 by 91, we get 2 and a remainder of 48.
Write down 2 as next digit of the result. 
Result so far: 10421.7472
Deduct 182 from 230 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 11:
91 can be fit into 480 5 times, resulting in a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 10421.74725
Subtracting 455 from 480 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 12:
If we divide 250 by 91, we get 2 and a remainder of 68.
The next digit of our result is 2. 
Result so far: 10421.747252
If we subtract 182 from 250, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Let's proceed to step 13:
680 divided by 91 is 7 with a remainder of 43.
The next digit of our result is 7. 
Result so far: 10421.7472527
Deduct 637 from 680 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Moving on to step 14:
91 goes into 430 4 times with a remainder of 66.
The next digit of our result is 4. 
Result so far: 10421.74725274
Subtract 364 from 430 to get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Our division results in 10421.74725274 with a remaining 6.6e-08.