We're dividing 23466443 by 421 
The aim is to understand the frequency of 421 in 23466443.

Advancing to step 1:
2 divided by 421 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 421

Advancing to step 2:
23 divided by 421 is 0 with a remainder of 23.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 23 and we're left with 23.
Fetch the next digit (4) from the dividend, attach it to 23 and continue: 234 / 421

Advancing to step 3:
When dividing 234 by 421, we get 0 with a remainder of 234.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 234 to get 234.
Take the next digit (6) from the dividend and append it to 234, then repeat: 2346 / 421

On to step 4:
The number 421 fits into 2346 5 times, leaving a remainder of 241.
Put 5 as the next digit of the answer. 
Result so far: 5.0
The remainder is 241 after subtracting 2105 from 2346.
Append the next digit (6) from the dividend to 241 and continue with: 2416 / 421

On to step 5:
2416 divided by 421 is 5 with a remainder of 311.
Put 5 as the next digit of the answer. 
Result so far: 55.0
If we subtract 2105 from 2416, we get 311.
Take the next digit (4) from the dividend and append it to 311, then repeat: 3114 / 421

Going ahead to step 6:
The number 421 fits into 3114 7 times, leaving a remainder of 167.
The number 7 becomes the next digit in our result. 
Result so far: 557.0
If we subtract 2947 from 3114, we get 167.
Bring next digit (4) of the dividend behind the 167 and repeat the process: 1674 / 421

Advancing to step 7:
1674 divided by 421 is 3 with a remainder of 411.
The number 3 becomes the next digit in our result. 
Result so far: 5573.0
Deduct 1263 from 1674 and we're left with 411.
Include the next digit (3) from the dividend after 411, then repeat: 4113 / 421

Advancing to step 8:
421 can be fit into 4113 9 times, resulting in a remainder of 324.
Use 9 as the next digit of our solution. 
Result so far: 55739.0
Subtract 3789 from 4113 to get 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Going ahead to step 9:
421 can be fit into 3240 7 times, resulting in a remainder of 293.
Write down 7 as next digit of the result. 
Result so far: 55739.7
If we take 2947 away from 3240, we end up with 293.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2930, and continue the process.

Step 10:
If we divide 2930 by 421, we get 6 and a remainder of 404.
Put 6 as the next digit of the answer. 
Result so far: 55739.76
Subtract 2526 from 2930 to get 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

Moving on to step 11:
If we divide 4040 by 421, we get 9 and a remainder of 251.
Write down 9 as next digit of the result. 
Result so far: 55739.769
Subtracting 3789 from 4040 leaves us with 251.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2510, and continue the process.

Moving on to step 12:
2510 divided by 421 is 5 with a remainder of 405.
Put 5 as the next digit of the answer. 
Result so far: 55739.7695
Subtracting 2105 from 2510 leaves us with 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Going ahead to step 13:
421 goes into 4050 9 times with a remainder of 261.
Write down 9 as next digit of the result. 
Result so far: 55739.76959
Subtract 3789 from 4050 to get 261.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2610, and continue the process.

Advancing to step 14:
If we divide 2610 by 421, we get 6 and a remainder of 84.
Write down 6 as next digit of the result. 
Result so far: 55739.769596
If we take 2526 away from 2610, we end up with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Moving on to step 15:
421 can be fit into 840 1 times, resulting in a remainder of 419.
Record the quotient 1 as the next digit in the result. 
Result so far: 55739.7695961
If we take 421 away from 840, we end up with 419.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4190, and continue the process.

Step 16:
421 goes into 4190 9 times with a remainder of 401.
Write down 9 as next digit of the result. 
Result so far: 55739.76959619
The remainder is 401 after subtracting 3789 from 4190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4010, and continue the process.

The final result is 55739.76959619 with a remainder of 4.01e-07.