491362 ÷ 91 
The aim is to understand the frequency of 91 in 491362.

Step 1:
91 can be fit into 4 0 times, resulting in a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (9) from the dividend, add it to 4, then carry on: 49 / 91

Going ahead to step 2:
91 goes into 49 0 times with a remainder of 49.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 49 and we're left with 49.
Take the next digit (1) from the dividend and append it to 49, then repeat: 491 / 91

Step 3:
The number 91 fits into 491 5 times, leaving a remainder of 36.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
The remainder is 36 after subtracting 455 from 491.
Bring next digit (3) of the dividend behind the 36 and repeat the process: 363 / 91

Advancing to step 4:
The number 91 fits into 363 3 times, leaving a remainder of 90.
Put 3 as the next digit of the answer. 
Result so far: 53.0
If we subtract 273 from 363, we get 90.
Take the next digit (6) from the dividend and append it to 90, then repeat: 906 / 91

Advancing to step 5:
91 goes into 906 9 times with a remainder of 87.
Put 9 as the next digit of the answer. 
Result so far: 539.0
If we take 819 away from 906, we end up with 87.
Append the next digit (2) from the dividend to 87 and continue with: 872 / 91

Advancing to step 6:
91 goes into 872 9 times with a remainder of 53.
Use 9 as the next digit of our solution. 
Result so far: 5399.0
Deduct 819 from 872 and we're left 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.

Step 7:
530 divided by 91 is 5 with a remainder of 75.
The next digit of our result is 5. 
Result so far: 5399.5
Subtracting 455 from 530 leaves us 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.

Going ahead to step 8:
The number 91 fits into 750 8 times, leaving a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 5399.58
Deduct 728 from 750 and we're left 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:
If we divide 220 by 91, we get 2 and a remainder of 38.
Put 2 as the next digit of the answer. 
Result so far: 5399.582
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.

Going ahead to step 10:
380 divided by 91 is 4 with a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 5399.5824
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.

Moving on to step 11:
If we divide 160 by 91, we get 1 and a remainder of 69.
The number 1 becomes the next digit in our result. 
Result so far: 5399.58241
If we subtract 91 from 160, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Step 12:
91 goes into 690 7 times with a remainder of 53.
Put 7 as the next digit of the answer. 
Result so far: 5399.582417
If we subtract 637 from 690, we get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

On to step 13:
91 can be fit into 530 5 times, resulting in a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 5399.5824175
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.

Moving on to step 14:
When dividing 750 by 91, we get 8 with a remainder of 22.
Record the quotient 8 as the next digit in the result. 
Result so far: 5399.58241758
Subtract 728 from 750 to get 22.
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 5399.58241758 and a remainder of 2.2e-08.