We're dividing 985421 by 99 
The aim is to understand the frequency of 99 in 985421.

Going ahead to step 1:
9 divided by 99 is 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Include the next digit (8) from the dividend after 9, then repeat: 98 / 99

Moving on to step 2:
99 goes into 98 0 times with a remainder of 98.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 98, we get 98.
Append the next digit (5) from the dividend to 98 and continue with: 985 / 99

Step 3:
The number 99 fits into 985 9 times, leaving a remainder of 94.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we take 891 away from 985, we end up with 94.
Take the next digit (4) from the dividend and append it to 94, then repeat: 944 / 99

Let's proceed to step 4:
If we divide 944 by 99, we get 9 and a remainder of 53.
The next digit of our result is 9. 
Result so far: 99.0
Subtract 891 from 944 to get 53.
Bring next digit (2) of the dividend behind the 53 and repeat the process: 532 / 99

Moving on to step 5:
532 divided by 99 is 5 with a remainder of 37.
The next digit of our result is 5. 
Result so far: 995.0
The remainder is 37 after subtracting 495 from 532.
Fetch the next digit (1) from the dividend, attach it to 37 and continue: 371 / 99

Going ahead to step 6:
99 can be fit into 371 3 times, resulting in a remainder of 74.
Put 3 as the next digit of the answer. 
Result so far: 9953.0
If we take 297 away from 371, we end up with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 7:
If we divide 740 by 99, we get 7 and a remainder of 47.
Write down 7 as next digit of the result. 
Result so far: 9953.7
If we take 693 away from 740, we end up with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 8:
99 can be fit into 470 4 times, resulting in a remainder of 74.
The next digit of our result is 4. 
Result so far: 9953.74
Subtract 396 from 470 to get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Moving on to step 9:
When dividing 740 by 99, we get 7 with a remainder of 47.
The next digit of our result is 7. 
Result so far: 9953.747
The remainder is 47 after subtracting 693 from 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Let's proceed to step 10:
If we divide 470 by 99, we get 4 and a remainder of 74.
The next digit of our result is 4. 
Result so far: 9953.7474
If we subtract 396 from 470, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

On to step 11:
If we divide 740 by 99, we get 7 and a remainder of 47.
Use 7 as the next digit of our solution. 
Result so far: 9953.74747
If we take 693 away from 740, we end up with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

On to step 12:
The number 99 fits into 470 4 times, leaving a remainder of 74.
The number 4 becomes the next digit in our result. 
Result so far: 9953.747474
Subtract 396 from 470 to get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

On to step 13:
740 divided by 99 is 7 with a remainder of 47.
The number 7 becomes the next digit in our result. 
Result so far: 9953.7474747
Subtracting 693 from 740 leaves us with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Going ahead to step 14:
When dividing 470 by 99, we get 4 with a remainder of 74.
The next digit of our result is 4. 
Result so far: 9953.74747474
Deduct 396 from 470 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

In conclusion, the division gives 9953.74747474 with a balance of 7.4e-08.