Let's divide 414685 by 21
The aim is to understand the frequency of 21 in 414685.

Let's proceed to step 1:
4 divided by 21 is 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Take the next digit (1) from the dividend and append it to 4, then repeat: 41 / 21

Going ahead to step 2:
When dividing 41 by 21, we get 1 with a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 20 after subtracting 21 from 41.
Grab the next digit (4) from the dividend, add it to 20, then carry on: 204 / 21

On to step 3:
204 divided by 21 is 9 with a remainder of 15.
Put 9 as the next digit of the answer. 
Result so far: 19.0
Deduct 189 from 204 and we're left with 15.
Append the next digit (6) from the dividend to 15 and continue with: 156 / 21

Going ahead to step 4:
If we divide 156 by 21, we get 7 and a remainder of 9.
Record the quotient 7 as the next digit in the result. 
Result so far: 197.0
Subtract 147 from 156 to get 9.
Fetch the next digit (8) from the dividend, attach it to 9 and continue: 98 / 21

Going ahead to step 5:
The number 21 fits into 98 4 times, leaving a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 1974.0
Subtracting 84 from 98 leaves us with 14.
Include the next digit (5) from the dividend after 14, then repeat: 145 / 21

Going ahead to step 6:
145 divided by 21 is 6 with a remainder of 19.
The next digit of our result is 6. 
Result so far: 19746.0
Subtract 126 from 145 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 7:
When dividing 190 by 21, we get 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 19746.9
If we take 189 away from 190, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 8:
When dividing 10 by 21, we get 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 19746.9
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
The number 21 fits into 100 4 times, leaving a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 19746.904
Subtracting 84 from 100 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 10:
21 can be fit into 160 7 times, resulting in a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 19746.9047
Deduct 147 from 160 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 11:
When dividing 130 by 21, we get 6 with a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 19746.90476
If we take 126 away from 130, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 12:
21 goes into 40 1 times with a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 19746.904761
Deduct 21 from 40 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 13:
21 goes into 190 9 times with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 19746.9047619
Deduct 189 from 190 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 14:
10 divided by 21 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 19746.9047619
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

In conclusion, the division gives 19746.9047619 with a balance of 1e-08.