932865 ÷ 21 
The aim is to understand the frequency of 21 in 932865.

Moving on to step 1:
21 can be fit into 9 0 times, resulting in a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Take the next digit (3) from the dividend and append it to 9, then repeat: 93 / 21

On to step 2:
93 divided by 21 is 4 with a remainder of 9.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we subtract 84 from 93, we get 9.
Include the next digit (2) from the dividend after 9, then repeat: 92 / 21

Step 3:
The number 21 fits into 92 4 times, leaving a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 44.0
If we take 84 away from 92, we end up with 8.
Fetch the next digit (8) from the dividend, attach it to 8 and continue: 88 / 21

On to step 4:
If we divide 88 by 21, we get 4 and a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 444.0
If we subtract 84 from 88, we get 4.
Append the next digit (6) from the dividend to 4 and continue with: 46 / 21

Let's proceed to step 5:
The number 21 fits into 46 2 times, leaving a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 4442.0
If we subtract 42 from 46, we get 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 21

Step 6:
45 divided by 21 is 2 with a remainder of 3.
The number 2 becomes the next digit in our result. 
Result so far: 44422.0
Subtract 42 from 45 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 7:
If we divide 30 by 21, we get 1 and a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 44422.1
If we subtract 21 from 30, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 8:
21 goes into 90 4 times with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 44422.14
Subtract 84 from 90 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 9:
60 divided by 21 is 2 with a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 44422.142
Subtracting 42 from 60 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 10:
If we divide 180 by 21, we get 8 and a remainder of 12.
The next digit of our result is 8. 
Result so far: 44422.1428
Deduct 168 from 180 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 11:
When dividing 120 by 21, we get 5 with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 44422.14285
Subtract 105 from 120 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 12:
When dividing 150 by 21, we get 7 with a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 44422.142857
Deduct 147 from 150 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 13:
21 can be fit into 30 1 times, resulting in a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 44422.1428571
Subtracting 21 from 30 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 14:
90 divided by 21 is 4 with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 44422.14285714
Subtracting 84 from 90 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

In conclusion, the division gives 44422.14285714 with a balance of 6e-09.