We look at the division of 549605 by 91 
The aim is to understand the frequency of 91 in 549605.

Moving on to step 1:
91 can be fit into 5 0 times, resulting in a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 91

Advancing to step 2:
91 can be fit into 54 0 times, resulting in a remainder of 54.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 54 and we're left with 54.
Fetch the next digit (9) from the dividend, attach it to 54 and continue: 549 / 91

Going ahead to step 3:
91 can be fit into 549 6 times, resulting in a remainder of 3.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Deduct 546 from 549 and we're left with 3.
Take the next digit (6) from the dividend and append it to 3, then repeat: 36 / 91

Step 4:
If we divide 36 by 91, we get 0 and a remainder of 36.
The next digit of our result is 0. 
Result so far: 60.0
If we subtract 0 from 36, we get 36.
Include the next digit (0) from the dividend after 36, then repeat: 360 / 91

Advancing to step 5:
91 goes into 360 3 times with a remainder of 87.
Write down 3 as next digit of the result. 
Result so far: 603.0
Deduct 273 from 360 and we're left with 87.
Bring next digit (5) of the dividend behind the 87 and repeat the process: 875 / 91

On to step 6:
91 goes into 875 9 times with a remainder of 56.
Put 9 as the next digit of the answer. 
Result so far: 6039.0
If we subtract 819 from 875, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 7:
91 goes into 560 6 times with a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 6039.6
If we take 546 away from 560, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 8:
91 can be fit into 140 1 times, resulting in a remainder of 49.
The number 1 becomes the next digit in our result. 
Result so far: 6039.61
The remainder is 49 after subtracting 91 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 9:
If we divide 490 by 91, we get 5 and a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 6039.615
The remainder is 35 after subtracting 455 from 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 10:
350 divided by 91 is 3 with a remainder of 77.
The next digit of our result is 3. 
Result so far: 6039.6153
The remainder is 77 after subtracting 273 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Advancing to step 11:
91 can be fit into 770 8 times, resulting in a remainder of 42.
Use 8 as the next digit of our solution. 
Result so far: 6039.61538
Subtracting 728 from 770 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 12:
91 can be fit into 420 4 times, resulting in a remainder of 56.
The number 4 becomes the next digit in our result. 
Result so far: 6039.615384
If we take 364 away from 420, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 13:
If we divide 560 by 91, we get 6 and a remainder of 14.
Write down 6 as next digit of the result. 
Result so far: 6039.6153846
Subtracting 546 from 560 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 14:
91 can be fit into 140 1 times, resulting in a remainder of 49.
The number 1 becomes the next digit in our result. 
Result so far: 6039.61538461
If we take 91 away from 140, we end up with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

The quotient of the division is 6039.61538461, and the remainder is 4.9e-08.