478501 ÷ 99 
The aim is to understand the frequency of 99 in 478501.

Advancing to step 1:
If we divide 4 by 99, we get 0 and a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (7) of the dividend behind the 4 and repeat the process: 47 / 99

Advancing to step 2:
47 divided by 99 is 0 with a remainder of 47.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 47 and we're left with 47.
Append the next digit (8) from the dividend to 47 and continue with: 478 / 99

On to step 3:
If we divide 478 by 99, we get 4 and a remainder of 82.
The next digit of our result is 4. 
Result so far: 4.0
If we subtract 396 from 478, we get 82.
Append the next digit (5) from the dividend to 82 and continue with: 825 / 99

Step 4:
99 can be fit into 825 8 times, resulting in a remainder of 33.
Write down 8 as next digit of the result. 
Result so far: 48.0
If we take 792 away from 825, we end up with 33.
Append the next digit (0) from the dividend to 33 and continue with: 330 / 99

Moving on to step 5:
99 goes into 330 3 times with a remainder of 33.
Use 3 as the next digit of our solution. 
Result so far: 483.0
Subtracting 297 from 330 leaves us with 33.
Take the next digit (1) from the dividend and append it to 33, then repeat: 331 / 99

Let's proceed to step 6:
If we divide 331 by 99, we get 3 and a remainder of 34.
The number 3 becomes the next digit in our result. 
Result so far: 4833.0
Subtracting 297 from 331 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Advancing to step 7:
When dividing 340 by 99, we get 3 with a remainder of 43.
The next digit of our result is 3. 
Result so far: 4833.3
The remainder is 43 after subtracting 297 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Step 8:
The number 99 fits into 430 4 times, leaving a remainder of 34.
Record the quotient 4 as the next digit in the result. 
Result so far: 4833.34
Deduct 396 from 430 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Advancing to step 9:
When dividing 340 by 99, we get 3 with a remainder of 43.
Write down 3 as next digit of the result. 
Result so far: 4833.343
Deduct 297 from 340 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

On to step 10:
The number 99 fits into 430 4 times, leaving a remainder of 34.
Use 4 as the next digit of our solution. 
Result so far: 4833.3434
Deduct 396 from 430 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 11:
99 can be fit into 340 3 times, resulting in a remainder of 43.
Write down 3 as next digit of the result. 
Result so far: 4833.34343
The remainder is 43 after subtracting 297 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Moving on to step 12:
When dividing 430 by 99, we get 4 with a remainder of 34.
The number 4 becomes the next digit in our result. 
Result so far: 4833.343434
Subtract 396 from 430 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 13:
If we divide 340 by 99, we get 3 and a remainder of 43.
Use 3 as the next digit of our solution. 
Result so far: 4833.3434343
Deduct 297 from 340 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Step 14:
If we divide 430 by 99, we get 4 and a remainder of 34.
Put 4 as the next digit of the answer. 
Result so far: 4833.34343434
If we take 396 away from 430, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

The final outcome is 4833.34343434, with a leftover of 3.4e-08.