We're dividing 439745 by 99 
The aim is to understand the frequency of 99 in 439745.

On to step 1:
The number 99 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 99

Step 2:
The number 99 fits into 43 0 times, leaving a remainder of 43.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 43, we get 43.
Grab the next digit (9) from the dividend, add it to 43, then carry on: 439 / 99

Let's proceed to step 3:
If we divide 439 by 99, we get 4 and a remainder of 43.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we subtract 396 from 439, we get 43.
Bring next digit (7) of the dividend behind the 43 and repeat the process: 437 / 99

Moving on to step 4:
437 divided by 99 is 4 with a remainder of 41.
Use 4 as the next digit of our solution. 
Result so far: 44.0
Subtract 396 from 437 to get 41.
Take the next digit (4) from the dividend and append it to 41, then repeat: 414 / 99

Going ahead to step 5:
If we divide 414 by 99, we get 4 and a remainder of 18.
Write down 4 as next digit of the result. 
Result so far: 444.0
The remainder is 18 after subtracting 396 from 414.
Append the next digit (5) from the dividend to 18 and continue with: 185 / 99

Step 6:
When dividing 185 by 99, we get 1 with a remainder of 86.
The number 1 becomes the next digit in our result. 
Result so far: 4441.0
The remainder is 86 after subtracting 99 from 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Step 7:
99 can be fit into 860 8 times, resulting in a remainder of 68.
Use 8 as the next digit of our solution. 
Result so far: 4441.8
If we subtract 792 from 860, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

On to step 8:
99 can be fit into 680 6 times, resulting in a remainder of 86.
Put 6 as the next digit of the answer. 
Result so far: 4441.86
Subtract 594 from 680 to get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Let's proceed to step 9:
When dividing 860 by 99, we get 8 with a remainder of 68.
Put 8 as the next digit of the answer. 
Result so far: 4441.868
Deduct 792 from 860 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 10:
If we divide 680 by 99, we get 6 and a remainder of 86.
The number 6 becomes the next digit in our result. 
Result so far: 4441.8686
Subtract 594 from 680 to get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

On to step 11:
The number 99 fits into 860 8 times, leaving a remainder of 68.
The next digit of our result is 8. 
Result so far: 4441.86868
The remainder is 68 after subtracting 792 from 860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

On to step 12:
The number 99 fits into 680 6 times, leaving a remainder of 86.
Record the quotient 6 as the next digit in the result. 
Result so far: 4441.868686
Deduct 594 from 680 and we're left with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Going ahead to step 13:
99 goes into 860 8 times with a remainder of 68.
Record the quotient 8 as the next digit in the result. 
Result so far: 4441.8686868
Subtracting 792 from 860 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Going ahead to step 14:
99 can be fit into 680 6 times, resulting in a remainder of 86.
Record the quotient 6 as the next digit in the result. 
Result so far: 4441.86868686
The remainder is 86 after subtracting 594 from 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

The quotient of the division is 4441.86868686, and the remainder is 8.6e-08.