796896 divided by 90 
The aim is to understand the frequency of 90 in 796896.

On to step 1:
If we divide 7 by 90, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (9) from the dividend and append it to 7, then repeat: 79 / 90

Let's proceed to step 2:
90 goes into 79 0 times with a remainder of 79.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 79 after subtracting 0 from 79.
Fetch the next digit (6) from the dividend, attach it to 79 and continue: 796 / 90

On to step 3:
When dividing 796 by 90, we get 8 with a remainder of 76.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtract 720 from 796 to get 76.
Take the next digit (8) from the dividend and append it to 76, then repeat: 768 / 90

Step 4:
The number 90 fits into 768 8 times, leaving a remainder of 48.
Use 8 as the next digit of our solution. 
Result so far: 88.0
Subtract 720 from 768 to get 48.
Grab the next digit (9) from the dividend, add it to 48, then carry on: 489 / 90

On to step 5:
When dividing 489 by 90, we get 5 with a remainder of 39.
Put 5 as the next digit of the answer. 
Result so far: 885.0
Subtract 450 from 489 to get 39.
Bring next digit (6) of the dividend behind the 39 and repeat the process: 396 / 90

Going ahead to step 6:
396 divided by 90 is 4 with a remainder of 36.
Record the quotient 4 as the next digit in the result. 
Result so far: 8854.0
Deduct 360 from 396 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 7:
90 can be fit into 360 4 times, resulting in a remainder of 0.
The next digit of our result is 4. 
Result so far: 8854.4
Subtract 360 from 360 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
The number 90 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 8854.4
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
If we divide 0 by 90, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 8854.4
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 8854.4 with a remaining 0.0.