We're dividing 608130 by 91 
The aim is to understand the frequency of 91 in 608130.

On to step 1:
When dividing 6 by 91, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (0) from the dividend after 6, then repeat: 60 / 91

Let's proceed to step 2:
91 goes into 60 0 times with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 60 after subtracting 0 from 60.
Fetch the next digit (8) from the dividend, attach it to 60 and continue: 608 / 91

On to step 3:
91 goes into 608 6 times with a remainder of 62.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtract 546 from 608 to get 62.
Bring next digit (1) of the dividend behind the 62 and repeat the process: 621 / 91

Moving on to step 4:
The number 91 fits into 621 6 times, leaving a remainder of 75.
Use 6 as the next digit of our solution. 
Result so far: 66.0
If we take 546 away from 621, we end up with 75.
Append the next digit (3) from the dividend to 75 and continue with: 753 / 91

Let's proceed to step 5:
The number 91 fits into 753 8 times, leaving a remainder of 25.
Use 8 as the next digit of our solution. 
Result so far: 668.0
The remainder is 25 after subtracting 728 from 753.
Append the next digit (0) from the dividend to 25 and continue with: 250 / 91

On to step 6:
250 divided by 91 is 2 with a remainder of 68.
Write down 2 as next digit of the result. 
Result so far: 6682.0
Deduct 182 from 250 and we're left with 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:
The number 91 fits into 680 7 times, leaving a remainder of 43.
The next digit of our result is 7. 
Result so far: 6682.7
Subtracting 637 from 680 leaves us 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 8:
91 goes into 430 4 times with a remainder of 66.
The next digit of our result is 4. 
Result so far: 6682.74
The remainder is 66 after subtracting 364 from 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Going ahead to step 9:
If we divide 660 by 91, we get 7 and a remainder of 23.
Use 7 as the next digit of our solution. 
Result so far: 6682.747
If we subtract 637 from 660, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Going ahead to step 10:
230 divided by 91 is 2 with a remainder of 48.
Record the quotient 2 as the next digit in the result. 
Result so far: 6682.7472
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.

Advancing to step 11:
480 divided by 91 is 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 6682.74725
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.

Step 12:
91 goes into 250 2 times with a remainder of 68.
Use 2 as the next digit of our solution. 
Result so far: 6682.747252
Subtract 182 from 250 to 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.

Going ahead to step 13:
680 divided by 91 is 7 with a remainder of 43.
Write down 7 as next digit of the result. 
Result so far: 6682.7472527
The remainder is 43 after subtracting 637 from 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Step 14:
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: 6682.74725274
If we take 364 away from 430, we end up 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.

Our division results in 6682.74725274 with a remaining 6.6e-08.