905001 divided by 99 
The aim is to understand the frequency of 99 in 905001.

On to step 1:
99 can be fit into 9 0 times, resulting in a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 99

Moving on to step 2:
99 goes into 90 0 times with a remainder of 90.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 90 leaves us with 90.
Take the next digit (5) from the dividend and append it to 90, then repeat: 905 / 99

Step 3:
If we divide 905 by 99, we get 9 and a remainder of 14.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtracting 891 from 905 leaves us with 14.
Grab the next digit (0) from the dividend, add it to 14, then carry on: 140 / 99

On to step 4:
99 goes into 140 1 times with a remainder of 41.
Write down 1 as next digit of the result. 
Result so far: 91.0
The remainder is 41 after subtracting 99 from 140.
Fetch the next digit (0) from the dividend, attach it to 41 and continue: 410 / 99

Advancing to step 5:
If we divide 410 by 99, we get 4 and a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 914.0
If we take 396 away from 410, we end up with 14.
Grab the next digit (1) from the dividend, add it to 14, then carry on: 141 / 99

Moving on to step 6:
The number 99 fits into 141 1 times, leaving a remainder of 42.
Put 1 as the next digit of the answer. 
Result so far: 9141.0
Subtract 99 from 141 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 7:
99 goes into 420 4 times with a remainder of 24.
Record the quotient 4 as the next digit in the result. 
Result so far: 9141.4
Subtract 396 from 420 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 8:
The number 99 fits into 240 2 times, leaving a remainder of 42.
Put 2 as the next digit of the answer. 
Result so far: 9141.42
The remainder is 42 after subtracting 198 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 9:
99 can be fit into 420 4 times, resulting in a remainder of 24.
The number 4 becomes the next digit in our result. 
Result so far: 9141.424
The remainder is 24 after subtracting 396 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 10:
If we divide 240 by 99, we get 2 and a remainder of 42.
Use 2 as the next digit of our solution. 
Result so far: 9141.4242
If we take 198 away from 240, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 11:
When dividing 420 by 99, we get 4 with a remainder of 24.
Use 4 as the next digit of our solution. 
Result so far: 9141.42424
If we take 396 away from 420, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 12:
If we divide 240 by 99, we get 2 and a remainder of 42.
Record the quotient 2 as the next digit in the result. 
Result so far: 9141.424242
The remainder is 42 after subtracting 198 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 13:
The number 99 fits into 420 4 times, leaving a remainder of 24.
The next digit of our result is 4. 
Result so far: 9141.4242424
Deduct 396 from 420 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 14:
If we divide 240 by 99, we get 2 and a remainder of 42.
Use 2 as the next digit of our solution. 
Result so far: 9141.42424242
Deduct 198 from 240 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

The final result is 9141.42424242 with a remainder of 4.2e-08.