Let's divide 258296 by 90
The aim is to understand the frequency of 90 in 258296.

Advancing to step 1:
90 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 90

On to step 2:
90 can be fit into 25 0 times, resulting in a remainder of 25.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 25 leaves us with 25.
Bring next digit (8) of the dividend behind the 25 and repeat the process: 258 / 90

On to step 3:
If we divide 258 by 90, we get 2 and a remainder of 78.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 180 from 258, we get 78.
Fetch the next digit (2) from the dividend, attach it to 78 and continue: 782 / 90

Moving on to step 4:
782 divided by 90 is 8 with a remainder of 62.
The next digit of our result is 8. 
Result so far: 28.0
Subtract 720 from 782 to get 62.
Grab the next digit (9) from the dividend, add it to 62, then carry on: 629 / 90

Let's proceed to step 5:
If we divide 629 by 90, we get 6 and a remainder of 89.
The next digit of our result is 6. 
Result so far: 286.0
If we take 540 away from 629, we end up with 89.
Append the next digit (6) from the dividend to 89 and continue with: 896 / 90

Advancing to step 6:
If we divide 896 by 90, we get 9 and a remainder of 86.
Use 9 as the next digit of our solution. 
Result so far: 2869.0
Subtracting 810 from 896 leaves us with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Step 7:
If we divide 860 by 90, we get 9 and a remainder of 50.
Write down 9 as next digit of the result. 
Result so far: 2869.9
Subtracting 810 from 860 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 8:
90 goes into 500 5 times with a remainder of 50.
The next digit of our result is 5. 
Result so far: 2869.95
If we subtract 450 from 500, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 9:
If we divide 500 by 90, we get 5 and a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 2869.955
Subtracting 450 from 500 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

After the division, we end up with 2869.955 and a remainder of 0.005.