We divide 409601 by 99
The aim is to understand the frequency of 99 in 409601.

Going ahead to step 1:
If we divide 4 by 99, we get 0 and a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 99

On to step 2:
The number 99 fits into 40 0 times, leaving a remainder of 40.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 40 after subtracting 0 from 40.
Append the next digit (9) from the dividend to 40 and continue with: 409 / 99

Let's proceed to step 3:
The number 99 fits into 409 4 times, leaving a remainder of 13.
The next digit of our result is 4. 
Result so far: 4.0
Subtracting 396 from 409 leaves us with 13.
Grab the next digit (6) from the dividend, add it to 13, then carry on: 136 / 99

Step 4:
If we divide 136 by 99, we get 1 and a remainder of 37.
The number 1 becomes the next digit in our result. 
Result so far: 41.0
If we subtract 99 from 136, we get 37.
Take the next digit (0) from the dividend and append it to 37, then repeat: 370 / 99

Advancing to step 5:
The number 99 fits into 370 3 times, leaving a remainder of 73.
Use 3 as the next digit of our solution. 
Result so far: 413.0
Deduct 297 from 370 and we're left with 73.
Append the next digit (1) from the dividend to 73 and continue with: 731 / 99

On to step 6:
731 divided by 99 is 7 with a remainder of 38.
Record the quotient 7 as the next digit in the result. 
Result so far: 4137.0
Subtract 693 from 731 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 7:
99 goes into 380 3 times with a remainder of 83.
Record the quotient 3 as the next digit in the result. 
Result so far: 4137.3
If we take 297 away from 380, we end up with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Advancing to step 8:
99 can be fit into 830 8 times, resulting in a remainder of 38.
Write down 8 as next digit of the result. 
Result so far: 4137.38
The remainder is 38 after subtracting 792 from 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 9:
380 divided by 99 is 3 with a remainder of 83.
Write down 3 as next digit of the result. 
Result so far: 4137.383
If we take 297 away from 380, we end up with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Let's proceed to step 10:
If we divide 830 by 99, we get 8 and a remainder of 38.
The number 8 becomes the next digit in our result. 
Result so far: 4137.3838
The remainder is 38 after subtracting 792 from 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 11:
The number 99 fits into 380 3 times, leaving a remainder of 83.
The number 3 becomes the next digit in our result. 
Result so far: 4137.38383
If we take 297 away from 380, we end up with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Step 12:
If we divide 830 by 99, we get 8 and a remainder of 38.
The next digit of our result is 8. 
Result so far: 4137.383838
Subtract 792 from 830 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 13:
99 can be fit into 380 3 times, resulting in a remainder of 83.
The next digit of our result is 3. 
Result so far: 4137.3838383
Deduct 297 from 380 and we're left with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Step 14:
830 divided by 99 is 8 with a remainder of 38.
Record the quotient 8 as the next digit in the result. 
Result so far: 4137.38383838
The remainder is 38 after subtracting 792 from 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Our division results in 4137.38383838 with a remaining 3.8e-08.