568855 ÷ 91 
The aim is to understand the frequency of 91 in 568855.

Moving on to step 1:
5 divided by 91 is 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (6) from the dividend to 5 and continue with: 56 / 91

Moving on to step 2:
When dividing 56 by 91, we get 0 with a remainder of 56.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 56 after subtracting 0 from 56.
Bring next digit (8) of the dividend behind the 56 and repeat the process: 568 / 91

On to step 3:
91 can be fit into 568 6 times, resulting in a remainder of 22.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Deduct 546 from 568 and we're left with 22.
Fetch the next digit (8) from the dividend, attach it to 22 and continue: 228 / 91

Going ahead to step 4:
91 goes into 228 2 times with a remainder of 46.
The next digit of our result is 2. 
Result so far: 62.0
If we subtract 182 from 228, we get 46.
Bring next digit (5) of the dividend behind the 46 and repeat the process: 465 / 91

Step 5:
The number 91 fits into 465 5 times, leaving a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 625.0
If we subtract 455 from 465, we get 10.
Grab the next digit (5) from the dividend, add it to 10, then carry on: 105 / 91

Moving on to step 6:
When dividing 105 by 91, we get 1 with a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 6251.0
Subtracting 91 from 105 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.

On to step 7:
When dividing 140 by 91, we get 1 with a remainder of 49.
Record the quotient 1 as the next digit in the result. 
Result so far: 6251.1
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.

On to step 8:
91 can be fit into 490 5 times, resulting in a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 6251.15
If we take 455 away from 490, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 9:
91 goes into 350 3 times with a remainder of 77.
The number 3 becomes the next digit in our result. 
Result so far: 6251.153
If we take 273 away from 350, we end up with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Moving on to step 10:
91 goes into 770 8 times with a remainder of 42.
Record the quotient 8 as the next digit in the result. 
Result so far: 6251.1538
The remainder is 42 after subtracting 728 from 770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 11:
If we divide 420 by 91, we get 4 and a remainder of 56.
Record the quotient 4 as the next digit in the result. 
Result so far: 6251.15384
Subtracting 364 from 420 leaves us 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 12:
91 goes into 560 6 times with a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 6251.153846
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.

Advancing to step 13:
If we divide 140 by 91, we get 1 and a remainder of 49.
The number 1 becomes the next digit in our result. 
Result so far: 6251.1538461
Deduct 91 from 140 and we're left 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.

On to step 14:
91 can be fit into 490 5 times, resulting in a remainder of 35.
The next digit of our result is 5. 
Result so far: 6251.15384615
Subtracting 455 from 490 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

After the division, we end up with 6251.15384615 and a remainder of 3.5e-08.