We're dividing 251972 by 99 
The aim is to understand the frequency of 99 in 251972.

Let's proceed to step 1:
99 goes into 2 0 times with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 99

Step 2:
99 can be fit into 25 0 times, resulting in a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 25 after subtracting 0 from 25.
Grab the next digit (1) from the dividend, add it to 25, then carry on: 251 / 99

On to step 3:
251 divided by 99 is 2 with a remainder of 53.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 198 from 251 leaves us with 53.
Grab the next digit (9) from the dividend, add it to 53, then carry on: 539 / 99

Advancing to step 4:
The number 99 fits into 539 5 times, leaving a remainder of 44.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
The remainder is 44 after subtracting 495 from 539.
Bring next digit (7) of the dividend behind the 44 and repeat the process: 447 / 99

Let's proceed to step 5:
99 goes into 447 4 times with a remainder of 51.
The number 4 becomes the next digit in our result. 
Result so far: 254.0
If we take 396 away from 447, we end up with 51.
Bring next digit (2) of the dividend behind the 51 and repeat the process: 512 / 99

Step 6:
99 can be fit into 512 5 times, resulting in a remainder of 17.
Record the quotient 5 as the next digit in the result. 
Result so far: 2545.0
Deduct 495 from 512 and we're left 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.

Advancing to step 7:
The number 99 fits into 170 1 times, leaving a remainder of 71.
Use 1 as the next digit of our solution. 
Result so far: 2545.1
Subtracting 99 from 170 leaves us 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.

Let's proceed to step 8:
If we divide 710 by 99, we get 7 and a remainder of 17.
Record the quotient 7 as the next digit in the result. 
Result so far: 2545.17
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.

Going ahead to step 9:
When dividing 170 by 99, we get 1 with a remainder of 71.
The number 1 becomes the next digit in our result. 
Result so far: 2545.171
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.

Let's proceed to step 10:
If we divide 710 by 99, we get 7 and a remainder of 17.
Use 7 as the next digit of our solution. 
Result so far: 2545.1717
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 11:
The number 99 fits into 170 1 times, leaving a remainder of 71.
Put 1 as the next digit of the answer. 
Result so far: 2545.17171
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.

Step 12:
If we divide 710 by 99, we get 7 and a remainder of 17.
Record the quotient 7 as the next digit in the result. 
Result so far: 2545.171717
Subtracting 693 from 710 leaves us 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.

Advancing to step 13:
99 goes into 170 1 times with a remainder of 71.
Put 1 as the next digit of the answer. 
Result so far: 2545.1717171
The remainder is 71 after subtracting 99 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Moving on to step 14:
When dividing 710 by 99, we get 7 with a remainder of 17.
The next digit of our result is 7. 
Result so far: 2545.17171717
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.

Our division results in 2545.17171717 with a remaining 1.7e-08.