We divide 420866 by 99
The aim is to understand the frequency of 99 in 420866.

Going ahead to step 1:
99 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 99

On to step 2:
The number 99 fits into 42 0 times, leaving a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Grab the next digit (0) from the dividend, add it to 42, then carry on: 420 / 99

Going ahead to step 3:
When dividing 420 by 99, we get 4 with a remainder of 24.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we subtract 396 from 420, we get 24.
Take the next digit (8) from the dividend and append it to 24, then repeat: 248 / 99

Advancing to step 4:
The number 99 fits into 248 2 times, leaving a remainder of 50.
The next digit of our result is 2. 
Result so far: 42.0
The remainder is 50 after subtracting 198 from 248.
Grab the next digit (6) from the dividend, add it to 50, then carry on: 506 / 99

Going ahead to step 5:
The number 99 fits into 506 5 times, leaving a remainder of 11.
The number 5 becomes the next digit in our result. 
Result so far: 425.0
The remainder is 11 after subtracting 495 from 506.
Grab the next digit (6) from the dividend, add it to 11, then carry on: 116 / 99

Let's proceed to step 6:
The number 99 fits into 116 1 times, leaving a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 4251.0
If we subtract 99 from 116, 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.

Step 7:
If we divide 170 by 99, we get 1 and a remainder of 71.
Record the quotient 1 as the next digit in the result. 
Result so far: 4251.1
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.

Step 8:
99 can be fit into 710 7 times, resulting in a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 4251.17
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.

Moving on to step 9:
99 can be fit into 170 1 times, resulting in a remainder of 71.
Put 1 as the next digit of the answer. 
Result so far: 4251.171
Deduct 99 from 170 and we're left 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.

Step 10:
710 divided by 99 is 7 with a remainder of 17.
The next digit of our result is 7. 
Result so far: 4251.1717
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.

Step 11:
When dividing 170 by 99, we get 1 with a remainder of 71.
Use 1 as the next digit of our solution. 
Result so far: 4251.17171
Subtract 99 from 170 to 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.

Let's proceed to step 12:
The number 99 fits into 710 7 times, leaving a remainder of 17.
Record the quotient 7 as the next digit in the result. 
Result so far: 4251.171717
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.

Going ahead to step 13:
99 goes into 170 1 times with a remainder of 71.
The number 1 becomes the next digit in our result. 
Result so far: 4251.1717171
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.

Step 14:
The number 99 fits into 710 7 times, leaving a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 4251.17171717
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.

The final result is 4251.17171717 with a remainder of 1.7e-08.