We're dividing 498090 by 91 
The aim is to understand the frequency of 91 in 498090.

Let's proceed to step 1:
4 divided by 91 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Fetch the next digit (9) from the dividend, attach it to 4 and continue: 49 / 91

Step 2:
If we divide 49 by 91, we get 0 and a remainder of 49.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 49 and we're left with 49.
Bring next digit (8) of the dividend behind the 49 and repeat the process: 498 / 91

On to step 3:
The number 91 fits into 498 5 times, leaving a remainder of 43.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Subtracting 455 from 498 leaves us with 43.
Grab the next digit (0) from the dividend, add it to 43, then carry on: 430 / 91

Moving on to step 4:
91 can be fit into 430 4 times, resulting in a remainder of 66.
The number 4 becomes the next digit in our result. 
Result so far: 54.0
Deduct 364 from 430 and we're left with 66.
Fetch the next digit (9) from the dividend, attach it to 66 and continue: 669 / 91

Let's proceed to step 5:
When dividing 669 by 91, we get 7 with a remainder of 32.
Put 7 as the next digit of the answer. 
Result so far: 547.0
If we subtract 637 from 669, we get 32.
Take the next digit (0) from the dividend and append it to 32, then repeat: 320 / 91

Going ahead to step 6:
If we divide 320 by 91, we get 3 and a remainder of 47.
Record the quotient 3 as the next digit in the result. 
Result so far: 5473.0
Subtracting 273 from 320 leaves us with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 7:
When dividing 470 by 91, we get 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 5473.5
If we take 455 away from 470, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 8:
91 can be fit into 150 1 times, resulting in a remainder of 59.
Put 1 as the next digit of the answer. 
Result so far: 5473.51
The remainder is 59 after subtracting 91 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing to step 9:
91 goes into 590 6 times with a remainder of 44.
The number 6 becomes the next digit in our result. 
Result so far: 5473.516
If we take 546 away from 590, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 10:
440 divided by 91 is 4 with a remainder of 76.
Record the quotient 4 as the next digit in the result. 
Result so far: 5473.5164
The remainder is 76 after subtracting 364 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 11:
91 goes into 760 8 times with a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 5473.51648
If we subtract 728 from 760, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 12:
320 divided by 91 is 3 with a remainder of 47.
The number 3 becomes the next digit in our result. 
Result so far: 5473.516483
Subtract 273 from 320 to get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Let's proceed to step 13:
470 divided by 91 is 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 5473.5164835
The remainder is 15 after subtracting 455 from 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 14:
The number 91 fits into 150 1 times, leaving a remainder of 59.
Record the quotient 1 as the next digit in the result. 
Result so far: 5473.51648351
If we take 91 away from 150, we end up with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

After the division, we end up with 5473.51648351 and a remainder of 5.9e-08.