We're dividing 532931 by 21 
The aim is to understand the frequency of 21 in 532931.

Advancing to step 1:
21 goes into 5 0 times with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Include the next digit (3) from the dividend after 5, then repeat: 53 / 21

Moving on to step 2:
The number 21 fits into 53 2 times, leaving a remainder of 11.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 11 after subtracting 42 from 53.
Bring next digit (2) of the dividend behind the 11 and repeat the process: 112 / 21

Let's proceed to step 3:
If we divide 112 by 21, we get 5 and a remainder of 7.
Write down 5 as next digit of the result. 
Result so far: 25.0
If we take 105 away from 112, we end up with 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 21

On to step 4:
21 goes into 79 3 times with a remainder of 16.
The number 3 becomes the next digit in our result. 
Result so far: 253.0
Subtracting 63 from 79 leaves us with 16.
Include the next digit (3) from the dividend after 16, then repeat: 163 / 21

Let's proceed to step 5:
If we divide 163 by 21, we get 7 and a remainder of 16.
Use 7 as the next digit of our solution. 
Result so far: 2537.0
The remainder is 16 after subtracting 147 from 163.
Append the next digit (1) from the dividend to 16 and continue with: 161 / 21

Let's proceed to step 6:
161 divided by 21 is 7 with a remainder of 14.
Record the quotient 7 as the next digit in the result. 
Result so far: 25377.0
If we subtract 147 from 161, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 7:
The number 21 fits into 140 6 times, leaving a remainder of 14.
Write down 6 as next digit of the result. 
Result so far: 25377.6
Subtract 126 from 140 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 8:
When dividing 140 by 21, we get 6 with a remainder of 14.
Record the quotient 6 as the next digit in the result. 
Result so far: 25377.66
Subtract 126 from 140 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

In conclusion, the division gives 25377.66 with a balance of 0.014.