We're dividing 391997 by 99 
The aim is to understand the frequency of 99 in 391997.

Moving on to step 1:
99 goes into 3 0 times with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 99

Moving on to step 2:
99 goes into 39 0 times with a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 39 leaves us with 39.
Grab the next digit (1) from the dividend, add it to 39, then carry on: 391 / 99

Let's proceed to step 3:
The number 99 fits into 391 3 times, leaving a remainder of 94.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 94 after subtracting 297 from 391.
Append the next digit (9) from the dividend to 94 and continue with: 949 / 99

Let's proceed to step 4:
When dividing 949 by 99, we get 9 with a remainder of 58.
Put 9 as the next digit of the answer. 
Result so far: 39.0
Subtracting 891 from 949 leaves us with 58.
Include the next digit (9) from the dividend after 58, then repeat: 589 / 99

Let's proceed to step 5:
If we divide 589 by 99, we get 5 and a remainder of 94.
Use 5 as the next digit of our solution. 
Result so far: 395.0
Subtract 495 from 589 to get 94.
Fetch the next digit (7) from the dividend, attach it to 94 and continue: 947 / 99

On to step 6:
The number 99 fits into 947 9 times, leaving a remainder of 56.
Write down 9 as next digit of the result. 
Result so far: 3959.0
Subtract 891 from 947 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 7:
When dividing 560 by 99, we get 5 with a remainder of 65.
Record the quotient 5 as the next digit in the result. 
Result so far: 3959.5
Subtracting 495 from 560 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 8:
99 can be fit into 650 6 times, resulting in a remainder of 56.
Put 6 as the next digit of the answer. 
Result so far: 3959.56
Subtracting 594 from 650 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 9:
If we divide 560 by 99, we get 5 and a remainder of 65.
Put 5 as the next digit of the answer. 
Result so far: 3959.565
If we subtract 495 from 560, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 10:
650 divided by 99 is 6 with a remainder of 56.
The number 6 becomes the next digit in our result. 
Result so far: 3959.5656
If we take 594 away from 650, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 11:
If we divide 560 by 99, we get 5 and a remainder of 65.
Write down 5 as next digit of the result. 
Result so far: 3959.56565
The remainder is 65 after subtracting 495 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 12:
The number 99 fits into 650 6 times, leaving a remainder of 56.
Write down 6 as next digit of the result. 
Result so far: 3959.565656
The remainder is 56 after subtracting 594 from 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 13:
If we divide 560 by 99, we get 5 and a remainder of 65.
Write down 5 as next digit of the result. 
Result so far: 3959.5656565
Subtracting 495 from 560 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 14:
The number 99 fits into 650 6 times, leaving a remainder of 56.
The number 6 becomes the next digit in our result. 
Result so far: 3959.56565656
Subtracting 594 from 650 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Our division results in 3959.56565656 with a remaining 5.6e-08.