Let's divide 24855684 by 421
The aim is to understand the frequency of 421 in 24855684.

Moving on to step 1:
The number 421 fits into 2 0 times, leaving a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (4) from the dividend, attach it to 2 and continue: 24 / 421

Moving on to step 2:
421 goes into 24 0 times with a remainder of 24.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 24, we get 24.
Bring next digit (8) of the dividend behind the 24 and repeat the process: 248 / 421

Advancing to step 3:
248 divided by 421 is 0 with a remainder of 248.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 248 after subtracting 0 from 248.
Bring next digit (5) of the dividend behind the 248 and repeat the process: 2485 / 421

Let's proceed to step 4:
421 goes into 2485 5 times with a remainder of 380.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we subtract 2105 from 2485, we get 380.
Bring next digit (5) of the dividend behind the 380 and repeat the process: 3805 / 421

Moving on to step 5:
421 goes into 3805 9 times with a remainder of 16.
The number 9 becomes the next digit in our result. 
Result so far: 59.0
Deduct 3789 from 3805 and we're left with 16.
Append the next digit (6) from the dividend to 16 and continue with: 166 / 421

Let's proceed to step 6:
If we divide 166 by 421, we get 0 and a remainder of 166.
Write down 0 as next digit of the result. 
Result so far: 590.0
Subtracting 0 from 166 leaves us with 166.
Fetch the next digit (8) from the dividend, attach it to 166 and continue: 1668 / 421

Moving on to step 7:
The number 421 fits into 1668 3 times, leaving a remainder of 405.
Use 3 as the next digit of our solution. 
Result so far: 5903.0
If we take 1263 away from 1668, we end up with 405.
Include the next digit (4) from the dividend after 405, then repeat: 4054 / 421

Let's proceed to step 8:
When dividing 4054 by 421, we get 9 with a remainder of 265.
The number 9 becomes the next digit in our result. 
Result so far: 59039.0
Deduct 3789 from 4054 and we're left with 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

Going ahead to step 9:
421 can be fit into 2650 6 times, resulting in a remainder of 124.
Put 6 as the next digit of the answer. 
Result so far: 59039.6
Deduct 2526 from 2650 and we're left with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Step 10:
421 can be fit into 1240 2 times, resulting in a remainder of 398.
The number 2 becomes the next digit in our result. 
Result so far: 59039.62
If we take 842 away from 1240, we end up with 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Step 11:
When dividing 3980 by 421, we get 9 with a remainder of 191.
Record the quotient 9 as the next digit in the result. 
Result so far: 59039.629
The remainder is 191 after subtracting 3789 from 3980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Moving on to step 12:
The number 421 fits into 1910 4 times, leaving a remainder of 226.
Put 4 as the next digit of the answer. 
Result so far: 59039.6294
Deduct 1684 from 1910 and we're left with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Advancing to step 13:
421 goes into 2260 5 times with a remainder of 155.
Write down 5 as next digit of the result. 
Result so far: 59039.62945
If we subtract 2105 from 2260, we get 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Let's proceed to step 14:
If we divide 1550 by 421, we get 3 and a remainder of 287.
Use 3 as the next digit of our solution. 
Result so far: 59039.629453
If we take 1263 away from 1550, we end up with 287.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2870, and continue the process.

Let's proceed to step 15:
When dividing 2870 by 421, we get 6 with a remainder of 344.
Put 6 as the next digit of the answer. 
Result so far: 59039.6294536
If we take 2526 away from 2870, we end up with 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Moving on to step 16:
When dividing 3440 by 421, we get 8 with a remainder of 72.
Write down 8 as next digit of the result. 
Result so far: 59039.62945368
If we take 3368 away from 3440, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

The final result is 59039.62945368 with a remainder of 7.2e-08.