229673 divided by 90 
The aim is to understand the frequency of 90 in 229673.

Moving on to step 1:
2 divided by 90 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Append the next digit (2) from the dividend to 2 and continue with: 22 / 90

On to step 2:
90 can be fit into 22 0 times, resulting in a remainder of 22.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 22 leaves us with 22.
Fetch the next digit (9) from the dividend, attach it to 22 and continue: 229 / 90

On to step 3:
229 divided by 90 is 2 with a remainder of 49.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 49 after subtracting 180 from 229.
Bring next digit (6) of the dividend behind the 49 and repeat the process: 496 / 90

Advancing to step 4:
When dividing 496 by 90, we get 5 with a remainder of 46.
The number 5 becomes the next digit in our result. 
Result so far: 25.0
If we take 450 away from 496, we end up with 46.
Fetch the next digit (7) from the dividend, attach it to 46 and continue: 467 / 90

Moving on to step 5:
If we divide 467 by 90, we get 5 and a remainder of 17.
The next digit of our result is 5. 
Result so far: 255.0
Subtract 450 from 467 to get 17.
Take the next digit (3) from the dividend and append it to 17, then repeat: 173 / 90

Let's proceed to step 6:
The number 90 fits into 173 1 times, leaving a remainder of 83.
The number 1 becomes the next digit in our result. 
Result so far: 2551.0
Subtracting 90 from 173 leaves us with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

On to step 7:
90 can be fit into 830 9 times, resulting in a remainder of 20.
The next digit of our result is 9. 
Result so far: 2551.9
If we subtract 810 from 830, 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 8:
The number 90 fits into 200 2 times, leaving a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 2551.92
Deduct 180 from 200 and we're left 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 9:
90 can be fit into 200 2 times, resulting in a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 2551.922
Deduct 180 from 200 and we're left 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 2551.922 with a remainder of 0.002.