Let's divide 32381502 by 21
The aim is to understand the frequency of 21 in 32381502.

Step 1:
The number 21 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (2) from the dividend, add it to 3, then carry on: 32 / 21

On to step 2:
21 goes into 32 1 times with a remainder of 11.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 21 from 32 leaves us with 11.
Take the next digit (3) from the dividend and append it to 11, then repeat: 113 / 21

Advancing to step 3:
113 divided by 21 is 5 with a remainder of 8.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Subtracting 105 from 113 leaves us with 8.
Grab the next digit (8) from the dividend, add it to 8, then carry on: 88 / 21

Advancing to step 4:
88 divided by 21 is 4 with a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 154.0
The remainder is 4 after subtracting 84 from 88.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 21

Step 5:
41 divided by 21 is 1 with a remainder of 20.
Use 1 as the next digit of our solution. 
Result so far: 1541.0
If we take 21 away from 41, we end up with 20.
Take the next digit (5) from the dividend and append it to 20, then repeat: 205 / 21

Moving on to step 6:
21 can be fit into 205 9 times, resulting in a remainder of 16.
The next digit of our result is 9. 
Result so far: 15419.0
If we subtract 189 from 205, we get 16.
Append the next digit (0) from the dividend to 16 and continue with: 160 / 21

Let's proceed to step 7:
If we divide 160 by 21, we get 7 and a remainder of 13.
The number 7 becomes the next digit in our result. 
Result so far: 154197.0
If we take 147 away from 160, we end up with 13.
Bring next digit (2) of the dividend behind the 13 and repeat the process: 132 / 21

Step 8:
21 can be fit into 132 6 times, resulting in a remainder of 6.
The next digit of our result is 6. 
Result so far: 1541976.0
Subtracting 126 from 132 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.

Advancing to step 9:
21 can be fit into 60 2 times, resulting in a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 1541976.2
The remainder is 18 after subtracting 42 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 10:
21 can be fit into 180 8 times, resulting in a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 1541976.28
If we subtract 168 from 180, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 11:
If we divide 120 by 21, we get 5 and a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 1541976.285
Deduct 105 from 120 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 12:
21 can be fit into 150 7 times, resulting in a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 1541976.2857
Subtracting 147 from 150 leaves us 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.

Advancing to step 13:
30 divided by 21 is 1 with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 1541976.28571
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.

Advancing to step 14:
21 goes into 90 4 times with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 1541976.285714
If we subtract 84 from 90, we 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.

Step 15:
If we divide 60 by 21, we get 2 and a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 1541976.2857142
The remainder is 18 after subtracting 42 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 16:
When dividing 180 by 21, we get 8 with a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 1541976.28571428
If we take 168 away from 180, we end up 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.

In conclusion, the division gives 1541976.28571428 with a balance of 1.2e-08.