16896 ÷ 90 
The aim is to understand the frequency of 90 in 16896.

Advancing to step 1:
The number 90 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 90

Moving on to step 2:
90 can be fit into 16 0 times, resulting in a remainder of 16.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 16, we end up with 16.
Append the next digit (8) from the dividend to 16 and continue with: 168 / 90

Advancing to step 3:
The number 90 fits into 168 1 times, leaving a remainder of 78.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 90 from 168, we get 78.
Grab the next digit (9) from the dividend, add it to 78, then carry on: 789 / 90

Let's proceed to step 4:
90 can be fit into 789 8 times, resulting in a remainder of 69.
Record the quotient 8 as the next digit in the result. 
Result so far: 18.0
The remainder is 69 after subtracting 720 from 789.
Include the next digit (6) from the dividend after 69, then repeat: 696 / 90

Going ahead to step 5:
If we divide 696 by 90, we get 7 and a remainder of 66.
Record the quotient 7 as the next digit in the result. 
Result so far: 187.0
Subtracting 630 from 696 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 6:
If we divide 660 by 90, we get 7 and a remainder of 30.
The next digit of our result is 7. 
Result so far: 187.7
The remainder is 30 after subtracting 630 from 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 7:
If we divide 300 by 90, we get 3 and a remainder of 30.
Put 3 as the next digit of the answer. 
Result so far: 187.73
The remainder is 30 after subtracting 270 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 8:
90 can be fit into 300 3 times, resulting in a remainder of 30.
The number 3 becomes the next digit in our result. 
Result so far: 187.733
If we subtract 270 from 300, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Our division results in 187.733 with a remaining 0.003.