We're dividing 326999 by 90 
The aim is to understand the frequency of 90 in 326999.

On to step 1:
When dividing 3 by 90, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Include the next digit (2) from the dividend after 3, then repeat: 32 / 90

Let's proceed to step 2:
32 divided by 90 is 0 with a remainder of 32.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 32 leaves us with 32.
Append the next digit (6) from the dividend to 32 and continue with: 326 / 90

On to step 3:
The number 90 fits into 326 3 times, leaving a remainder of 56.
The next digit of our result is 3. 
Result so far: 3.0
Deduct 270 from 326 and we're left with 56.
Take the next digit (9) from the dividend and append it to 56, then repeat: 569 / 90

Moving on to step 4:
When dividing 569 by 90, we get 6 with a remainder of 29.
Write down 6 as next digit of the result. 
Result so far: 36.0
Subtracting 540 from 569 leaves us with 29.
Bring next digit (9) of the dividend behind the 29 and repeat the process: 299 / 90

Advancing to step 5:
When dividing 299 by 90, we get 3 with a remainder of 29.
Use 3 as the next digit of our solution. 
Result so far: 363.0
If we take 270 away from 299, we end up with 29.
Append the next digit (9) from the dividend to 29 and continue with: 299 / 90

Going ahead to step 6:
90 goes into 299 3 times with a remainder of 29.
Put 3 as the next digit of the answer. 
Result so far: 3633.0
Deduct 270 from 299 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 7:
90 can be fit into 290 3 times, resulting in a remainder of 20.
Write down 3 as next digit of the result. 
Result so far: 3633.3
If we take 270 away from 290, 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.

Going ahead 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: 3633.32
Subtracting 180 from 200 leaves us 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.

Advancing to step 9:
The number 90 fits into 200 2 times, leaving a remainder of 20.
Record the quotient 2 as the next digit in the result. 
Result so far: 3633.322
Subtracting 180 from 200 leaves us 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.

The final result is 3633.322 with a remainder of 0.002.