Let's divide 88399050 by 421
The aim is to understand the frequency of 421 in 88399050.

Going ahead to step 1:
421 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (8) from the dividend, attach it to 8 and continue: 88 / 421

Let's proceed to step 2:
When dividing 88 by 421, we get 0 with a remainder of 88.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 88 and we're left with 88.
Bring next digit (3) of the dividend behind the 88 and repeat the process: 883 / 421

Going ahead to step 3:
When dividing 883 by 421, we get 2 with a remainder of 41.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 41 after subtracting 842 from 883.
Include the next digit (9) from the dividend after 41, then repeat: 419 / 421

Advancing to step 4:
If we divide 419 by 421, we get 0 and a remainder of 419.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
Subtracting 0 from 419 leaves us with 419.
Grab the next digit (9) from the dividend, add it to 419, then carry on: 4199 / 421

Moving on to step 5:
421 can be fit into 4199 9 times, resulting in a remainder of 410.
The next digit of our result is 9. 
Result so far: 209.0
The remainder is 410 after subtracting 3789 from 4199.
Include the next digit (0) from the dividend after 410, then repeat: 4100 / 421

Let's proceed to step 6:
When dividing 4100 by 421, we get 9 with a remainder of 311.
Record the quotient 9 as the next digit in the result. 
Result so far: 2099.0
Subtract 3789 from 4100 to get 311.
Take the next digit (5) from the dividend and append it to 311, then repeat: 3115 / 421

Moving on to step 7:
421 goes into 3115 7 times with a remainder of 168.
The next digit of our result is 7. 
Result so far: 20997.0
Subtracting 2947 from 3115 leaves us with 168.
Take the next digit (0) from the dividend and append it to 168, then repeat: 1680 / 421

Let's proceed to step 8:
421 goes into 1680 3 times with a remainder of 417.
Use 3 as the next digit of our solution. 
Result so far: 209973.0
The remainder is 417 after subtracting 1263 from 1680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4170, and continue the process.

On to step 9:
421 goes into 4170 9 times with a remainder of 381.
Put 9 as the next digit of the answer. 
Result so far: 209973.9
If we take 3789 away from 4170, we end up with 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

Going ahead to step 10:
3810 divided by 421 is 9 with a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 209973.99
If we take 3789 away from 3810, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

In conclusion, the division gives 209973.99 with a balance of 0.021.