We divide 423012 by 99
The aim is to understand the frequency of 99 in 423012.

Going ahead to step 1:
If we divide 4 by 99, we get 0 and a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 99

On to step 2:
The number 99 fits into 42 0 times, leaving a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 42 to get 42.
Include the next digit (3) from the dividend after 42, then repeat: 423 / 99

Advancing to step 3:
99 goes into 423 4 times with a remainder of 27.
The next digit of our result is 4. 
Result so far: 4.0
If we subtract 396 from 423, we get 27.
Bring next digit (0) of the dividend behind the 27 and repeat the process: 270 / 99

Step 4:
99 goes into 270 2 times with a remainder of 72.
Put 2 as the next digit of the answer. 
Result so far: 42.0
If we subtract 198 from 270, we get 72.
Include the next digit (1) from the dividend after 72, then repeat: 721 / 99

On to step 5:
721 divided by 99 is 7 with a remainder of 28.
Use 7 as the next digit of our solution. 
Result so far: 427.0
If we take 693 away from 721, we end up with 28.
Fetch the next digit (2) from the dividend, attach it to 28 and continue: 282 / 99

On to step 6:
If we divide 282 by 99, we get 2 and a remainder of 84.
The number 2 becomes the next digit in our result. 
Result so far: 4272.0
The remainder is 84 after subtracting 198 from 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Advancing to step 7:
If we divide 840 by 99, we get 8 and a remainder of 48.
The next digit of our result is 8. 
Result so far: 4272.8
If we take 792 away from 840, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 8:
99 goes into 480 4 times with a remainder of 84.
The next digit of our result is 4. 
Result so far: 4272.84
Deduct 396 from 480 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Let's proceed to step 9:
99 goes into 840 8 times with a remainder of 48.
The number 8 becomes the next digit in our result. 
Result so far: 4272.848
If we subtract 792 from 840, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 10:
99 goes into 480 4 times with a remainder of 84.
The number 4 becomes the next digit in our result. 
Result so far: 4272.8484
The remainder is 84 after subtracting 396 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Advancing to step 11:
When dividing 840 by 99, we get 8 with a remainder of 48.
Put 8 as the next digit of the answer. 
Result so far: 4272.84848
If we subtract 792 from 840, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 12:
When dividing 480 by 99, we get 4 with a remainder of 84.
Put 4 as the next digit of the answer. 
Result so far: 4272.848484
The remainder is 84 after subtracting 396 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Let's proceed to step 13:
99 goes into 840 8 times with a remainder of 48.
The number 8 becomes the next digit in our result. 
Result so far: 4272.8484848
Subtract 792 from 840 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 14:
99 goes into 480 4 times with a remainder of 84.
Put 4 as the next digit of the answer. 
Result so far: 4272.84848484
The remainder is 84 after subtracting 396 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

After the division, we end up with 4272.84848484 and a remainder of 8.4e-08.