We divide 885566 by 90
The aim is to understand the frequency of 90 in 885566.

Step 1:
The number 90 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (8) from the dividend and append it to 8, then repeat: 88 / 90

Let's proceed to step 2:
When dividing 88 by 90, we get 0 with a remainder of 88.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 88, we get 88.
Include the next digit (5) from the dividend after 88, then repeat: 885 / 90

Let's proceed to step 3:
885 divided by 90 is 9 with a remainder of 75.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we take 810 away from 885, we end up with 75.
Take the next digit (5) from the dividend and append it to 75, then repeat: 755 / 90

On to step 4:
755 divided by 90 is 8 with a remainder of 35.
The next digit of our result is 8. 
Result so far: 98.0
Subtract 720 from 755 to get 35.
Append the next digit (6) from the dividend to 35 and continue with: 356 / 90

Going ahead to step 5:
If we divide 356 by 90, we get 3 and a remainder of 86.
Record the quotient 3 as the next digit in the result. 
Result so far: 983.0
Deduct 270 from 356 and we're left with 86.
Fetch the next digit (6) from the dividend, attach it to 86 and continue: 866 / 90

Moving on to step 6:
90 can be fit into 866 9 times, resulting in a remainder of 56.
Use 9 as the next digit of our solution. 
Result so far: 9839.0
The remainder is 56 after subtracting 810 from 866.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 7:
The number 90 fits into 560 6 times, leaving a remainder of 20.
The next digit of our result is 6. 
Result so far: 9839.6
Deduct 540 from 560 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.

Going ahead to step 8:
90 can be fit into 200 2 times, resulting in a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 9839.62
If we subtract 180 from 200, 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.

Let's proceed to step 9:
The number 90 fits into 200 2 times, leaving a remainder of 20.
The next digit of our result is 2. 
Result so far: 9839.622
If we take 180 away from 200, 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.

In conclusion, the division gives 9839.622 with a balance of 0.002.