We look at the division of 165663 by 99 
The aim is to understand the frequency of 99 in 165663.

Moving on to step 1:
When dividing 1 by 99, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 99

Going ahead to step 2:
When dividing 16 by 99, we get 0 with a remainder of 16.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 16 after subtracting 0 from 16.
Fetch the next digit (5) from the dividend, attach it to 16 and continue: 165 / 99

Going ahead to step 3:
If we divide 165 by 99, we get 1 and a remainder of 66.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 99 from 165 leaves us with 66.
Grab the next digit (6) from the dividend, add it to 66, then carry on: 666 / 99

Going ahead to step 4:
99 can be fit into 666 6 times, resulting in a remainder of 72.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Deduct 594 from 666 and we're left with 72.
Append the next digit (6) from the dividend to 72 and continue with: 726 / 99

Moving on to step 5:
When dividing 726 by 99, we get 7 with a remainder of 33.
Record the quotient 7 as the next digit in the result. 
Result so far: 167.0
If we subtract 693 from 726, we get 33.
Grab the next digit (3) from the dividend, add it to 33, then carry on: 333 / 99

Step 6:
The number 99 fits into 333 3 times, leaving a remainder of 36.
Record the quotient 3 as the next digit in the result. 
Result so far: 1673.0
If we subtract 297 from 333, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 7:
99 goes into 360 3 times with a remainder of 63.
Put 3 as the next digit of the answer. 
Result so far: 1673.3
If we take 297 away from 360, we end up with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Advancing to step 8:
99 can be fit into 630 6 times, resulting in a remainder of 36.
The number 6 becomes the next digit in our result. 
Result so far: 1673.36
Subtract 594 from 630 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 9:
99 goes into 360 3 times with a remainder of 63.
Write down 3 as next digit of the result. 
Result so far: 1673.363
The remainder is 63 after subtracting 297 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Step 10:
When dividing 630 by 99, we get 6 with a remainder of 36.
Use 6 as the next digit of our solution. 
Result so far: 1673.3636
Subtract 594 from 630 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 11:
When dividing 360 by 99, we get 3 with a remainder of 63.
The number 3 becomes the next digit in our result. 
Result so far: 1673.36363
Deduct 297 from 360 and we're left with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Advancing to step 12:
The number 99 fits into 630 6 times, leaving a remainder of 36.
The next digit of our result is 6. 
Result so far: 1673.363636
If we subtract 594 from 630, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 13:
If we divide 360 by 99, we get 3 and a remainder of 63.
Put 3 as the next digit of the answer. 
Result so far: 1673.3636363
Deduct 297 from 360 and we're left with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

On to step 14:
99 goes into 630 6 times with a remainder of 36.
Write down 6 as next digit of the result. 
Result so far: 1673.36363636
Subtract 594 from 630 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The final result is 1673.36363636 with a remainder of 3.6e-08.