We're dividing 318531 by 99 
The aim is to understand the frequency of 99 in 318531.

Step 1:
99 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 99

On to step 2:
99 can be fit into 31 0 times, resulting in a remainder of 31.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 31, we end up with 31.
Grab the next digit (8) from the dividend, add it to 31, then carry on: 318 / 99

Moving on to step 3:
99 goes into 318 3 times with a remainder of 21.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 297 from 318 leaves us with 21.
Fetch the next digit (5) from the dividend, attach it to 21 and continue: 215 / 99

Moving on to step 4:
The number 99 fits into 215 2 times, leaving a remainder of 17.
Put 2 as the next digit of the answer. 
Result so far: 32.0
If we subtract 198 from 215, we get 17.
Fetch the next digit (3) from the dividend, attach it to 17 and continue: 173 / 99

Moving on to step 5:
173 divided by 99 is 1 with a remainder of 74.
Write down 1 as next digit of the result. 
Result so far: 321.0
If we subtract 99 from 173, we get 74.
Include the next digit (1) from the dividend after 74, then repeat: 741 / 99

Let's proceed to step 6:
741 divided by 99 is 7 with a remainder of 48.
Write down 7 as next digit of the result. 
Result so far: 3217.0
If we subtract 693 from 741, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 7:
The number 99 fits into 480 4 times, leaving a remainder of 84.
Use 4 as the next digit of our solution. 
Result so far: 3217.4
If we take 396 away from 480, we end up with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Moving on to step 8:
99 can be fit into 840 8 times, resulting in a remainder of 48.
The next digit of our result is 8. 
Result so far: 3217.48
Deduct 792 from 840 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 9:
99 can be fit into 480 4 times, resulting in a remainder of 84.
The number 4 becomes the next digit in our result. 
Result so far: 3217.484
Deduct 396 from 480 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Advancing to step 10:
99 goes into 840 8 times with a remainder of 48.
Put 8 as the next digit of the answer. 
Result so far: 3217.4848
Deduct 792 from 840 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 11:
99 goes into 480 4 times with a remainder of 84.
Use 4 as the next digit of our solution. 
Result so far: 3217.48484
If we take 396 away from 480, we end up with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 12:
840 divided by 99 is 8 with a remainder of 48.
Write down 8 as next digit of the result. 
Result so far: 3217.484848
Deduct 792 from 840 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 13:
When dividing 480 by 99, we get 4 with a remainder of 84.
Record the quotient 4 as the next digit in the result. 
Result so far: 3217.4848484
The remainder is 84 after subtracting 396 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Advancing to step 14:
If we divide 840 by 99, we get 8 and a remainder of 48.
Use 8 as the next digit of our solution. 
Result so far: 3217.48484848
If we subtract 792 from 840, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

After the division, we end up with 3217.48484848 and a remainder of 4.8e-08.