Let's divide 480021 by 91
The aim is to understand the frequency of 91 in 480021.

Let's proceed to step 1:
91 goes into 4 0 times with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 91

Moving on to step 2:
If we divide 48 by 91, we get 0 and a remainder of 48.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 48 leaves us with 48.
Fetch the next digit (0) from the dividend, attach it to 48 and continue: 480 / 91

Let's proceed to step 3:
When dividing 480 by 91, we get 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we subtract 455 from 480, we get 25.
Include the next digit (0) from the dividend after 25, then repeat: 250 / 91

Advancing to step 4:
When dividing 250 by 91, we get 2 with a remainder of 68.
The next digit of our result is 2. 
Result so far: 52.0
Subtracting 182 from 250 leaves us with 68.
Fetch the next digit (2) from the dividend, attach it to 68 and continue: 682 / 91

Let's proceed to step 5:
If we divide 682 by 91, we get 7 and a remainder of 45.
Put 7 as the next digit of the answer. 
Result so far: 527.0
If we subtract 637 from 682, we get 45.
Fetch the next digit (1) from the dividend, attach it to 45 and continue: 451 / 91

Going ahead to step 6:
91 can be fit into 451 4 times, resulting in a remainder of 87.
Use 4 as the next digit of our solution. 
Result so far: 5274.0
The remainder is 87 after subtracting 364 from 451.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

On to step 7:
When dividing 870 by 91, we get 9 with a remainder of 51.
Write down 9 as next digit of the result. 
Result so far: 5274.9
The remainder is 51 after subtracting 819 from 870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Let's proceed to step 8:
The number 91 fits into 510 5 times, leaving a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 5274.95
If we subtract 455 from 510, we get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Let's proceed to step 9:
The number 91 fits into 550 6 times, leaving a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 5274.956
If we subtract 546 from 550, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 10:
If we divide 40 by 91, we get 0 and a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 5274.956
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 11:
91 can be fit into 400 4 times, resulting in a remainder of 36.
The next digit of our result is 4. 
Result so far: 5274.95604
Subtract 364 from 400 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 12:
If we divide 360 by 91, we get 3 and a remainder of 87.
The number 3 becomes the next digit in our result. 
Result so far: 5274.956043
Deduct 273 from 360 and we're left with 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Let's proceed to step 13:
870 divided by 91 is 9 with a remainder of 51.
Put 9 as the next digit of the answer. 
Result so far: 5274.9560439
If we take 819 away from 870, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Moving on to step 14:
510 divided by 91 is 5 with a remainder of 55.
The next digit of our result is 5. 
Result so far: 5274.95604395
Subtract 455 from 510 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

The final result is 5274.95604395 with a remainder of 5.5e-08.