Let's divide 18085 by 90
The aim is to understand the frequency of 90 in 18085.

On to step 1:
The number 90 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 90

Going ahead to step 2:
If we divide 18 by 90, we get 0 and a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 18 after subtracting 0 from 18.
Include the next digit (0) from the dividend after 18, then repeat: 180 / 90

Advancing to step 3:
If we divide 180 by 90, we get 2 and a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 180 from 180, we get 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 90

Let's proceed to step 4:
When dividing 8 by 90, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 20.0
If we subtract 0 from 8, we get 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 90

Let's proceed to step 5:
90 can be fit into 85 0 times, resulting in a remainder of 85.
The number 0 becomes the next digit in our result. 
Result so far: 200.0
If we take 0 away from 85, we end up with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Advancing to step 6:
If we divide 850 by 90, we get 9 and a remainder of 40.
Write down 9 as next digit of the result. 
Result so far: 200.9
Subtract 810 from 850 to 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 7:
90 goes into 400 4 times with a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 200.94
Subtract 360 from 400 to 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.

Let's proceed to step 8:
When dividing 400 by 90, we get 4 with a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 200.944
Subtracting 360 from 400 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Our division results in 200.944 with a remaining 0.004.