Let's divide 9838 by 90
The aim is to understand the frequency of 90 in 9838.

Moving on to step 1:
When dividing 9 by 90, we get 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Fetch the next digit (8) from the dividend, attach it to 9 and continue: 98 / 90

Let's proceed to step 2:
90 goes into 98 1 times with a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 90 away from 98, we end up with 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 90

Step 3:
The number 90 fits into 83 0 times, leaving a remainder of 83.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Deduct 0 from 83 and we're left with 83.
Grab the next digit (8) from the dividend, add it to 83, then carry on: 838 / 90

Going ahead to step 4:
When dividing 838 by 90, we get 9 with a remainder of 28.
Write down 9 as next digit of the result. 
Result so far: 109.0
Deduct 810 from 838 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 5:
90 goes into 280 3 times with a remainder of 10.
The next digit of our result is 3. 
Result so far: 109.3
If we take 270 away from 280, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 6:
90 can be fit into 100 1 times, resulting in a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 109.31
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 7:
If we divide 100 by 90, we get 1 and a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 109.311
Subtracting 90 from 100 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

After the division, we end up with 109.311 and a remainder of 0.001.