We're dividing 452261 by 90 
The aim is to understand the frequency of 90 in 452261.

Let's proceed to step 1:
90 can be fit into 4 0 times, resulting in a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Fetch the next digit (5) from the dividend, attach it to 4 and continue: 45 / 90

Step 2:
90 can be fit into 45 0 times, resulting in a remainder of 45.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 45 and we're left with 45.
Fetch the next digit (2) from the dividend, attach it to 45 and continue: 452 / 90

Moving on to step 3:
90 goes into 452 5 times with a remainder of 2.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we take 450 away from 452, we end up with 2.
Grab the next digit (2) from the dividend, add it to 2, then carry on: 22 / 90

Step 4:
90 goes into 22 0 times with a remainder of 22.
Record the quotient 0 as the next digit in the result. 
Result so far: 50.0
If we take 0 away from 22, we end up with 22.
Include the next digit (6) from the dividend after 22, then repeat: 226 / 90

Advancing to step 5:
90 can be fit into 226 2 times, resulting in a remainder of 46.
Put 2 as the next digit of the answer. 
Result so far: 502.0
Subtracting 180 from 226 leaves us with 46.
Grab the next digit (1) from the dividend, add it to 46, then carry on: 461 / 90

Going ahead to step 6:
90 can be fit into 461 5 times, resulting in a remainder of 11.
The next digit of our result is 5. 
Result so far: 5025.0
Deduct 450 from 461 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 7:
When dividing 110 by 90, we get 1 with a remainder of 20.
Use 1 as the next digit of our solution. 
Result so far: 5025.1
If we take 90 away from 110, 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.

On to step 8:
If we divide 200 by 90, we get 2 and a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 5025.12
The remainder is 20 after subtracting 180 from 200.
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 9:
When dividing 200 by 90, we get 2 with a remainder of 20.
The next digit of our result is 2. 
Result so far: 5025.122
The remainder is 20 after subtracting 180 from 200.
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 5025.122 with a remaining 0.002.