We divide 519918 by 99
The aim is to understand the frequency of 99 in 519918.

On to step 1:
99 can be fit into 5 0 times, resulting in a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 99

Moving on to step 2:
99 can be fit into 51 0 times, resulting in a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Bring next digit (9) of the dividend behind the 51 and repeat the process: 519 / 99

Step 3:
The number 99 fits into 519 5 times, leaving a remainder of 24.
The next digit of our result is 5. 
Result so far: 5.0
The remainder is 24 after subtracting 495 from 519.
Grab the next digit (9) from the dividend, add it to 24, then carry on: 249 / 99

Let's proceed to step 4:
The number 99 fits into 249 2 times, leaving a remainder of 51.
The number 2 becomes the next digit in our result. 
Result so far: 52.0
Subtract 198 from 249 to get 51.
Append the next digit (1) from the dividend to 51 and continue with: 511 / 99

Going ahead to step 5:
When dividing 511 by 99, we get 5 with a remainder of 16.
Use 5 as the next digit of our solution. 
Result so far: 525.0
If we subtract 495 from 511, we get 16.
Append the next digit (8) from the dividend to 16 and continue with: 168 / 99

Let's proceed to step 6:
The number 99 fits into 168 1 times, leaving a remainder of 69.
Use 1 as the next digit of our solution. 
Result so far: 5251.0
If we take 99 away from 168, we end up with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Advancing to step 7:
99 goes into 690 6 times with a remainder of 96.
The number 6 becomes the next digit in our result. 
Result so far: 5251.6
Deduct 594 from 690 and we're left with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Let's proceed to step 8:
99 can be fit into 960 9 times, resulting in a remainder of 69.
Use 9 as the next digit of our solution. 
Result so far: 5251.69
If we subtract 891 from 960, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Step 9:
99 can be fit into 690 6 times, resulting in a remainder of 96.
The next digit of our result is 6. 
Result so far: 5251.696
Subtracting 594 from 690 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 10:
When dividing 960 by 99, we get 9 with a remainder of 69.
The next digit of our result is 9. 
Result so far: 5251.6969
If we take 891 away from 960, we end up with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

On to step 11:
When dividing 690 by 99, we get 6 with a remainder of 96.
Record the quotient 6 as the next digit in the result. 
Result so far: 5251.69696
Deduct 594 from 690 and we're left with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Let's proceed to step 12:
The number 99 fits into 960 9 times, leaving a remainder of 69.
Use 9 as the next digit of our solution. 
Result so far: 5251.696969
If we take 891 away from 960, we end up with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 13:
When dividing 690 by 99, we get 6 with a remainder of 96.
Put 6 as the next digit of the answer. 
Result so far: 5251.6969696
Deduct 594 from 690 and we're left with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Advancing to step 14:
99 goes into 960 9 times with a remainder of 69.
Put 9 as the next digit of the answer. 
Result so far: 5251.69696969
If we take 891 away from 960, we end up with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

The final outcome is 5251.69696969, with a leftover of 6.9e-08.