We're dividing 72017946 by 99 
The aim is to understand the frequency of 99 in 72017946.

On to step 1:
If we divide 7 by 99, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (2) from the dividend and append it to 7, then repeat: 72 / 99

Going ahead to step 2:
If we divide 72 by 99, we get 0 and a remainder of 72.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 72, we get 72.
Bring next digit (0) of the dividend behind the 72 and repeat the process: 720 / 99

Step 3:
99 can be fit into 720 7 times, resulting in a remainder of 27.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Deduct 693 from 720 and we're left with 27.
Bring next digit (1) of the dividend behind the 27 and repeat the process: 271 / 99

Going ahead to step 4:
The number 99 fits into 271 2 times, leaving a remainder of 73.
Record the quotient 2 as the next digit in the result. 
Result so far: 72.0
The remainder is 73 after subtracting 198 from 271.
Grab the next digit (7) from the dividend, add it to 73, then carry on: 737 / 99

Let's proceed to step 5:
The number 99 fits into 737 7 times, leaving a remainder of 44.
Write down 7 as next digit of the result. 
Result so far: 727.0
Subtracting 693 from 737 leaves us with 44.
Include the next digit (9) from the dividend after 44, then repeat: 449 / 99

Moving on to step 6:
449 divided by 99 is 4 with a remainder of 53.
Put 4 as the next digit of the answer. 
Result so far: 7274.0
Subtracting 396 from 449 leaves us with 53.
Take the next digit (4) from the dividend and append it to 53, then repeat: 534 / 99

Moving on to step 7:
When dividing 534 by 99, we get 5 with a remainder of 39.
The next digit of our result is 5. 
Result so far: 72745.0
Subtracting 495 from 534 leaves us with 39.
Append the next digit (6) from the dividend to 39 and continue with: 396 / 99

Step 8:
99 can be fit into 396 4 times, resulting in a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 727454.0
If we subtract 396 from 396, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
99 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 727454.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
0 divided by 99 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 727454.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 727454.0 and a remainder of 0.0.