We look at the division of 291473 by 99 
The aim is to understand the frequency of 99 in 291473.

On to step 1:
2 divided by 99 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (9) from the dividend and append it to 2, then repeat: 29 / 99

Going ahead to step 2:
29 divided by 99 is 0 with a remainder of 29.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 29, we get 29.
Append the next digit (1) from the dividend to 29 and continue with: 291 / 99

Going ahead to step 3:
When dividing 291 by 99, we get 2 with a remainder of 93.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 198 away from 291, we end up with 93.
Fetch the next digit (4) from the dividend, attach it to 93 and continue: 934 / 99

Let's proceed to step 4:
When dividing 934 by 99, we get 9 with a remainder of 43.
The number 9 becomes the next digit in our result. 
Result so far: 29.0
Subtract 891 from 934 to get 43.
Include the next digit (7) from the dividend after 43, then repeat: 437 / 99

Step 5:
When dividing 437 by 99, we get 4 with a remainder of 41.
The number 4 becomes the next digit in our result. 
Result so far: 294.0
Deduct 396 from 437 and we're left with 41.
Fetch the next digit (3) from the dividend, attach it to 41 and continue: 413 / 99

Advancing to step 6:
413 divided by 99 is 4 with a remainder of 17.
Record the quotient 4 as the next digit in the result. 
Result so far: 2944.0
If we take 396 away from 413, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 7:
170 divided by 99 is 1 with a remainder of 71.
Put 1 as the next digit of the answer. 
Result so far: 2944.1
If we take 99 away from 170, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 8:
When dividing 710 by 99, we get 7 with a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 2944.17
If we take 693 away from 710, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 9:
99 can be fit into 170 1 times, resulting in a remainder of 71.
Put 1 as the next digit of the answer. 
Result so far: 2944.171
If we subtract 99 from 170, we get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Advancing to step 10:
99 can be fit into 710 7 times, resulting in a remainder of 17.
Use 7 as the next digit of our solution. 
Result so far: 2944.1717
The remainder is 17 after subtracting 693 from 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 11:
170 divided by 99 is 1 with a remainder of 71.
The next digit of our result is 1. 
Result so far: 2944.17171
If we take 99 away from 170, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Advancing to step 12:
710 divided by 99 is 7 with a remainder of 17.
Write down 7 as next digit of the result. 
Result so far: 2944.171717
If we subtract 693 from 710, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 13:
99 goes into 170 1 times with a remainder of 71.
Use 1 as the next digit of our solution. 
Result so far: 2944.1717171
Subtract 99 from 170 to get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Advancing to step 14:
If we divide 710 by 99, we get 7 and a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 2944.17171717
Subtract 693 from 710 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

The final outcome is 2944.17171717, with a leftover of 1.7e-08.