We're dividing 539137 by 91 
The aim is to understand the frequency of 91 in 539137.

Advancing to step 1:
5 divided by 91 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 91

Going ahead to step 2:
91 goes into 53 0 times with a remainder of 53.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 53 leaves us with 53.
Grab the next digit (9) from the dividend, add it to 53, then carry on: 539 / 91

Moving on to step 3:
The number 91 fits into 539 5 times, leaving a remainder of 84.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtract 455 from 539 to get 84.
Bring next digit (1) of the dividend behind the 84 and repeat the process: 841 / 91

Going ahead to step 4:
841 divided by 91 is 9 with a remainder of 22.
The next digit of our result is 9. 
Result so far: 59.0
If we take 819 away from 841, we end up with 22.
Include the next digit (3) from the dividend after 22, then repeat: 223 / 91

Moving on to step 5:
When dividing 223 by 91, we get 2 with a remainder of 41.
Put 2 as the next digit of the answer. 
Result so far: 592.0
Subtract 182 from 223 to get 41.
Take the next digit (7) from the dividend and append it to 41, then repeat: 417 / 91

Let's proceed to step 6:
91 can be fit into 417 4 times, resulting in a remainder of 53.
Record the quotient 4 as the next digit in the result. 
Result so far: 5924.0
Subtracting 364 from 417 leaves us with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 7:
If we divide 530 by 91, we get 5 and a remainder of 75.
Record the quotient 5 as the next digit in the result. 
Result so far: 5924.5
If we subtract 455 from 530, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Going ahead to step 8:
91 can be fit into 750 8 times, resulting in a remainder of 22.
Put 8 as the next digit of the answer. 
Result so far: 5924.58
Subtracting 728 from 750 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 9:
91 can be fit into 220 2 times, resulting in a remainder of 38.
The next digit of our result is 2. 
Result so far: 5924.582
Subtract 182 from 220 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 10:
91 can be fit into 380 4 times, resulting in a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 5924.5824
Deduct 364 from 380 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 11:
160 divided by 91 is 1 with a remainder of 69.
Record the quotient 1 as the next digit in the result. 
Result so far: 5924.58241
Subtracting 91 from 160 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Going ahead to step 12:
When dividing 690 by 91, we get 7 with a remainder of 53.
The number 7 becomes the next digit in our result. 
Result so far: 5924.582417
If we take 637 away from 690, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Let's proceed to step 13:
The number 91 fits into 530 5 times, leaving a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 5924.5824175
If we take 455 away from 530, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 14:
750 divided by 91 is 8 with a remainder of 22.
Put 8 as the next digit of the answer. 
Result so far: 5924.58241758
The remainder is 22 after subtracting 728 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

After the division, we end up with 5924.58241758 and a remainder of 2.2e-08.