We divide 454817 by 90
The aim is to understand the frequency of 90 in 454817.

On to step 1:
90 goes into 4 0 times with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 90

Let's proceed to step 2:
The number 90 fits into 45 0 times, leaving a remainder of 45.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 45 and we're left with 45.
Grab the next digit (4) from the dividend, add it to 45, then carry on: 454 / 90

Moving on to step 3:
When dividing 454 by 90, we get 5 with a remainder of 4.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtract 450 from 454 to get 4.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 90

Let's proceed to step 4:
48 divided by 90 is 0 with a remainder of 48.
Write down 0 as next digit of the result. 
Result so far: 50.0
Subtracting 0 from 48 leaves us with 48.
Take the next digit (1) from the dividend and append it to 48, then repeat: 481 / 90

Moving on to step 5:
When dividing 481 by 90, we get 5 with a remainder of 31.
Write down 5 as next digit of the result. 
Result so far: 505.0
If we take 450 away from 481, we end up with 31.
Append the next digit (7) from the dividend to 31 and continue with: 317 / 90

Let's proceed to step 6:
If we divide 317 by 90, we get 3 and a remainder of 47.
The next digit of our result is 3. 
Result so far: 5053.0
Subtracting 270 from 317 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.

On to step 7:
90 goes into 470 5 times with a remainder of 20.
The next digit of our result is 5. 
Result so far: 5053.5
If we take 450 away from 470, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 8:
90 goes into 200 2 times with a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 5053.52
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 9:
If we divide 200 by 90, we get 2 and a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 5053.522
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 5053.522 with a remaining 0.002.