196808 divided by 90 
The aim is to understand the frequency of 90 in 196808.

On to step 1:
The number 90 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 90

Advancing to step 2:
90 goes into 19 0 times with a remainder of 19.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 19, we end up with 19.
Append the next digit (6) from the dividend to 19 and continue with: 196 / 90

Let's proceed to step 3:
If we divide 196 by 90, we get 2 and a remainder of 16.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 180 from 196 and we're left with 16.
Fetch the next digit (8) from the dividend, attach it to 16 and continue: 168 / 90

Step 4:
90 goes into 168 1 times with a remainder of 78.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
Subtracting 90 from 168 leaves us with 78.
Take the next digit (0) from the dividend and append it to 78, then repeat: 780 / 90

Going ahead to step 5:
90 can be fit into 780 8 times, resulting in a remainder of 60.
Write down 8 as next digit of the result. 
Result so far: 218.0
Subtracting 720 from 780 leaves us with 60.
Grab the next digit (8) from the dividend, add it to 60, then carry on: 608 / 90

Advancing to step 6:
If we divide 608 by 90, we get 6 and a remainder of 68.
Record the quotient 6 as the next digit in the result. 
Result so far: 2186.0
The remainder is 68 after subtracting 540 from 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

On to step 7:
The number 90 fits into 680 7 times, leaving a remainder of 50.
Record the quotient 7 as the next digit in the result. 
Result so far: 2186.7
If we take 630 away from 680, 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.

Step 8:
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: 2186.75
Subtract 450 from 500 to 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.

Going ahead to step 9:
The number 90 fits into 500 5 times, leaving a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 2186.755
The remainder is 50 after subtracting 450 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Our division results in 2186.755 with a remaining 0.005.