We look at the division of 550607 by 91 
The aim is to understand the frequency of 91 in 550607.

Moving on to step 1:
91 goes into 5 0 times with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 91

Going ahead to step 2:
The number 91 fits into 55 0 times, leaving a remainder of 55.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 55 to get 55.
Append the next digit (0) from the dividend to 55 and continue with: 550 / 91

Moving on to step 3:
When dividing 550 by 91, we get 6 with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Deduct 546 from 550 and we're left with 4.
Fetch the next digit (6) from the dividend, attach it to 4 and continue: 46 / 91

Going ahead to step 4:
The number 91 fits into 46 0 times, leaving a remainder of 46.
Write down 0 as next digit of the result. 
Result so far: 60.0
If we subtract 0 from 46, we get 46.
Append the next digit (0) from the dividend to 46 and continue with: 460 / 91

Going ahead to step 5:
The number 91 fits into 460 5 times, leaving a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 605.0
If we subtract 455 from 460, we get 5.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 91

Moving on to step 6:
91 goes into 57 0 times with a remainder of 57.
Write down 0 as next digit of the result. 
Result so far: 6050.0
Subtract 0 from 57 to get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

On to step 7:
570 divided by 91 is 6 with a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 6050.6
If we subtract 546 from 570, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 8:
The number 91 fits into 240 2 times, leaving a remainder of 58.
The number 2 becomes the next digit in our result. 
Result so far: 6050.62
If we take 182 away from 240, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 9:
When dividing 580 by 91, we get 6 with a remainder of 34.
The number 6 becomes the next digit in our result. 
Result so far: 6050.626
Deduct 546 from 580 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 10:
91 goes into 340 3 times with a remainder of 67.
Write down 3 as next digit of the result. 
Result so far: 6050.6263
If we take 273 away from 340, we end up with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Let's proceed to step 11:
When dividing 670 by 91, we get 7 with a remainder of 33.
The number 7 becomes the next digit in our result. 
Result so far: 6050.62637
Subtract 637 from 670 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Going ahead to step 12:
91 goes into 330 3 times with a remainder of 57.
The number 3 becomes the next digit in our result. 
Result so far: 6050.626373
If we take 273 away from 330, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Going ahead to step 13:
When dividing 570 by 91, we get 6 with a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 6050.6263736
Deduct 546 from 570 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 14:
91 goes into 240 2 times with a remainder of 58.
Write down 2 as next digit of the result. 
Result so far: 6050.62637362
Subtract 182 from 240 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

In conclusion, the division gives 6050.62637362 with a balance of 5.8e-08.