99455333 ÷ 90 
The aim is to understand the frequency of 90 in 99455333.

Let's proceed to step 1:
90 goes into 9 0 times with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 90

Let's proceed to step 2:
90 goes into 99 1 times with a remainder of 9.
The next digit of our result is 1. 
Result so far: 1.0
If we take 90 away from 99, we end up with 9.
Fetch the next digit (4) from the dividend, attach it to 9 and continue: 94 / 90

Step 3:
The number 90 fits into 94 1 times, leaving a remainder of 4.
Write down 1 as next digit of the result. 
Result so far: 11.0
Subtracting 90 from 94 leaves us with 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 90

Going ahead to step 4:
90 can be fit into 45 0 times, resulting in a remainder of 45.
The next digit of our result is 0. 
Result so far: 110.0
Subtracting 0 from 45 leaves us with 45.
Fetch the next digit (5) from the dividend, attach it to 45 and continue: 455 / 90

Moving on to step 5:
90 goes into 455 5 times with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 1105.0
Subtract 450 from 455 to get 5.
Include the next digit (3) from the dividend after 5, then repeat: 53 / 90

Moving on to step 6:
90 goes into 53 0 times with a remainder of 53.
The number 0 becomes the next digit in our result. 
Result so far: 11050.0
If we subtract 0 from 53, we get 53.
Fetch the next digit (3) from the dividend, attach it to 53 and continue: 533 / 90

Moving on to step 7:
When dividing 533 by 90, we get 5 with a remainder of 83.
The number 5 becomes the next digit in our result. 
Result so far: 110505.0
If we take 450 away from 533, we end up with 83.
Bring next digit (3) of the dividend behind the 83 and repeat the process: 833 / 90

Moving on to step 8:
90 goes into 833 9 times with a remainder of 23.
Write down 9 as next digit of the result. 
Result so far: 1105059.0
Deduct 810 from 833 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 9:
230 divided by 90 is 2 with a remainder of 50.
Record the quotient 2 as the next digit in the result. 
Result so far: 1105059.2
The remainder is 50 after subtracting 180 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 10:
If we divide 500 by 90, we get 5 and a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 1105059.25
If we take 450 away from 500, we end up 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 11:
500 divided by 90 is 5 with a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 1105059.255
If we take 450 away from 500, we end up 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.

In conclusion, the division gives 1105059.255 with a balance of 0.005.